Journal articles: 'Maximum opening of the mouth'

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Alshammari, Fahad, Njoud AlSaheel, Najd Alhamzah, Ra’ed Salma, and Ahmed Alshammari. "Maximum Mouth Opening among Saudi Arabian Adults." Acta Scientific Dental Scienecs 4, no. 7 (June 18, 2020): 46–51. http://dx.doi.org/10.31080/asds.2020.04.0859.

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Yao, Kuang-Ta, Chia-Cheng Lin, and Chao-Ho Hung. "Maximum mouth opening of ethnic Chinese in Taiwan." Journal of Dental Sciences 4, no. 1 (March 2009): 40–44. http://dx.doi.org/10.1016/s1991-7902(09)60007-6.

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Calder, Ian, John Picard, Martin Chapman, Caoimhe O'Sullivan, and H. Alan Crockard. "Mouth Opening." Anesthesiology 99, no. 4 (October 1, 2003): 799–801. http://dx.doi.org/10.1097/00000542-200310000-00009.

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Background The authors hypothesized that craniocervical extension occurs during normal mouth opening. Methods Twenty volunteers were studied. Interdental distance was measured at four different degrees of craniocervical extension. Results Interdental distance increased from 28 mm (95% confidence interval, 25-30) in slight flexion to 46 mm (95% confidence interval, 42-49) at full extension. Nearly maximal mouth opening was obtained with 26 degrees (95% confidence interval, 22-30) of craniocervical extension from neutral. Conclusion Craniocervical extension is an integral part of complete mouth opening in conscious subjects. Fixation of the craniocervical junction by disease, an internal or external fixation device, or technique may restrict mouth opening, with consequences for airway management.

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Ayuse, T., T. Inazawa, S. Kurata, I. Okayasu, E. Sakamoto, K. Oi, H. Schneider, and A. R. Schwartz. "Mouth-opening Increases Upper-airway Collapsibility without Changing Resistance during Midazolam Sedation." Journal of Dental Research 83, no. 9 (September 2004): 718–22. http://dx.doi.org/10.1177/154405910408300912.

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Sedative doses of anesthetic agents affect upper-airway function. Oral-maxillofacial surgery is frequently performed on sedated patients whose mouths must be as open as possible if the procedures are to be accomplished successfully. We examined upper-airway pressure-flow relationships in closed mouths, mouths opened moderately, and mouths opened maximally to test the hypothesis that mouth-opening compromises upper-airway patency during midazolam sedation. From these relationships, upper-airway critical pressure (Pcrit) and upstream resistance (Rua) were derived. Maximal mouth-opening increased Pcrit to −3.6 ± 2.9 cm H2O compared with −8.7 ± 2.8 (p = 0.002) for closed mouths and −7.2 ± 4.1 (p = 0.038) for mouths opened moderately. In contrast, Rua was similar in all three conditions (18.4 ± 6.6 vs. 17.7 ± 7.6 vs. 21.5 ± 11.6 cm H2O/L/sec). Moreover, maximum mouth-opening produced an inspiratory airflow limitation at atmosphere that was eliminated when nasal pressure was adjusted to 4.3 ± 2.7 cm H2O. We conclude that maximal mouth-opening increases upper-airway collapsibility, which contributes to upper-airway obstruction at atmosphere during midazolam sedation.

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Abou-Atme, Youssef S., Nada Chedid, Marcello Melis, and Khalid H. Zawawi. "Clinical Measurement of Normal Maximum Mouth Opening in Children." CRANIO® 26, no. 3 (July 2008): 191–96. http://dx.doi.org/10.1179/crn.2008.025.

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Sadiq, Muhammad Shairaz, Fareed Ahmad, Ali Anwaar, M. Salman Chisthy, Bilal Abdul Qayum Mirza, and Shafa Ahmed. "Maximum Mouth Opening Range in Adult Patients Presented at Dental OPD CMH, Lahore." Pakistan Journal of Medical and Health Sciences 15, no. 7 (July 26, 2021): 1752–54. http://dx.doi.org/10.53350/pjmhs211571752.

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Objective: To determine the maximum mouth opening (MMO) in Pakistani adult population and its possible correlation with sex and age. Design of the Study: It was a cross-sectional study. Study Settings: This study was carried out at Outpatient Department of Dentistry Combined Military Hospital, Lahore from January 2019 to July 2019. Material and Methods: The study involved 894 adults’ patients having 463 males and 431 females patients age in the range of twenty one year to seventy years. The patients were asked maximally open their mouth and keep it open until no further opening of mouth possible. Then with the help of calibrated fiber ruler distance was measured from incisal edge of the upper incisor teeth to the incisal edge of the lower incisor teeth. To check the correlation of mouth opening with age a Pearson correlation analysis was done and significance of the test was checked by applying the independent sample T-test will be applied taking p value of ≤0.05 as statistically significant. A written informed consent was obtained from every patient. Results of the Study: For males mean maximum opening of mouth was observed as 51.4±8.1 mm having its range 38 to 70. Mean maximum opening of mouth for females was observed as 43.1±5.9 mm having age range 37 to 55 mm. In 21 to 30 years age group the opening of mouth was 39.90 ± 5.02 mm for female’s patients and 40.26 ± 5.26 mm for male patients. In 31 to 40 years age group the opening of mouth was 39.54 ± 4.69 mm for females and for female’s patients it was 40.24 ± 4.55 for male patients. In 41 to 50 years age group MMO was 40.24 ± 5.02 mm for females and was 40.97 ± 4.79 mm for males. In age 51 to 60 years age group the equivalent values for males were 41.54 ± 5.49 and for females41.04 ± 5.63 mm. In 61 to 70 years age group the corresponding values for females and males were 40.33 ±5.55 mm and41.25 ± 6.04 respectively. Conclusion: The mean MMO for males was 51.4 ± 8.2 and for females was 43.1 ± 6.7. The opening of the mouth looks to reduce with age. The opening of mouth of females is not as much of the males in the all groups of age. Keywords: Maximum mouth opening (MMO), Age, Sex

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Singh, Aruna, Nymphea Pandit, and Monica Sharma. "To Establish A Normal Range of Inter-Incisal Opening - A Study of 756 Subjects of Age Group 20-50 Years in Yamunanagar City, Haryana." Dental Journal of Advance Studies 01, no. 01 (April 2013): 001–3. http://dx.doi.org/10.1055/s-0038-1670583.

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Abstract Aim- 1. The aim of this study was to investigate the average maximum range of inter-incisal mouth opening in a representative sample of the adult subjects of Haryana. 2. To see any correlation between maximal inter-incisal opening with age. Methods- Maximum mouth opening was studied in 756 adult subjects with age range of 20-50 years in Yamunanagar, Haryana. Age limit was further divided into three groups (20-30, 31-40, 41-50). Those with clinical history of TMJ involvement, OSMF, any trauma, odontogenic and non-odontogenic infections, dental prosthesis on the anterior teeth, congenital anomalies in the maxillofacial region were excluded from this study. The measurements were recorded twice and mean of the two values were taken. Statistical Analysis- Independent sample t-test was calculated to compare age and mouth opening in both male and females respectively. Bivariate pearson correlation was used to see any relationship between age and mouth opening. P-value ≤ 0.05 and CI (confidence interval) at 95% were considered statistically significant. The Results- The average mouth opening of males (45.36±6.70 mm) subjects was higher as compared to female (41.27 ± 6.75 mm) with significant, p-value 0.000. The mean mouth opening ± SD for both sexes combined was 43.39 ± 7.02 mm. The corresponding values for mean inter-incisal opening in male population aged 20-30, 31-40, 41-50 were 45.52 ± 7.15, 46.16 ± 5.47, 42.96 ± 6.82 mm and in female population aged 20-30, 31-40, 41-50 were 41.40 ± 7.08, 41.60 ± 6.29 and 40.03 ± 6.38 mm respectively. Conclusion- Maximal mouth opening differ significantly with gender. There is a decrease in MMO with older age group.

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Williams, W. N., L. L. Lapointe, C. E. Cornell, and G. E. Turner. "Effect of Mouth Opening on Bite-Force Discrimination." Perceptual and Motor Skills 66, no. 1 (February 1988): 227–34. http://dx.doi.org/10.2466/pms.1988.66.1.227.

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The purpose of this study was to determine whether different extents of mouth opening affect normal subjects' ( N = 24; 12 women, 12 men) ability to discriminate differences in their interincisor bite force. Three mouth openings were selected including 50, 70, and 90 percent of maximum opening for each subject. Bite force was measured using a specially designed strain gauge scale which permitted subjects to monitor visually when their biting force equalled a preset resistance. Resistance forces of 500 and 1000 gm. were selected as standards. The procedure involved the use of a modified method of constant stimuli in which each subject was presented with a series of paired resistance settings, one at a time—the first resistance setting being the standard and the second resistance was the comparator. This paired-comparisons procedure was continued until the subjects' difference limen (DL) value (the threshold of discrimination between two forces) could be established. An analysis of variance yielded no significant differences in subjects' ability to discriminate bite force as a function of mouth opening.

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Nitzan, D. W., B. Azaz, and S. Constantini. "Severe limitation in mouth opening following transtemporal neurosurgical procedures: diagnosis, treatment, and prevention." Journal of Neurosurgery 76, no. 4 (April 1992): 623–25. http://dx.doi.org/10.3171/jns.1992.76.4.0623.

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✓ Five new patients and six previously described patients with severe limitation in maximum mouth opening following transtemporal neurosurgical procedures are described. Six patients underwent an operation for epidural hematoma and three for skull-base meningioma; two were treated with a pterional craniotomy for an aneurysm. Limited maximum mouth opening in these circumstances is caused by temporal muscle scarring and shortening. Aggressive physiotherapy is potentially beneficial if started early. If, however, diagnosis is delayed, the efficacy of physiotherapy declines, and surgical treatments such as temporal muscle detachment and coronoidectomy are fully indicated. The differential diagnosis, prevention, and treatment of limited maximum mouth opening following neurosurgical procedures are discussed.

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Aliya, Syed, Harsimran Kaur, Nishita Garg, Rishika, and Ramakrishna Yeluri. "Clinical Measurement of Maximum Mouth Opening in Children Aged 6–12." Journal of Clinical Pediatric Dentistry 45, no. 3 (June 30, 2021): 216–20. http://dx.doi.org/10.17796/1053-4625-45.3.12.

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Objective: To evaluate the clinical maximum mouth opening in children and its correlation with age, and sex. Study Design: Three hundred children of age 6–12 years, from different schools of Moradabad city were included. The participants were divided into three groups based on their age i.e Group 1 (n=100) 6–8 years, Group 2 (n=100) 8–10 years and Group 3 (n=100) 10–12 yrs. Three recordings of maximum mouth opening (MMO) were obtained using digital vernier caliper and the mean of three was considered as the MMO of that child. The data was analyzed using Spearman correlation, ANOVA with post- hoc Bonferroni test. The significance level was predetermined at p≤0.05 .Results: The mean MMO for children of Moradabad of aged 6–8yrs in boys is 39.87 ± 4.91 mm and in girls is 36.85± 4.09 mm. In 8–10 yeas age group, the MMO in boys is 44.5± 5.1 mm and in girls 41.77± 5.24 mm. In 10–12 year age group, the MMO in boys is 49.63± 5.56 mm and in girls is 49.33±5.32 mm respectively. The MMO was found to be higher in boys in all the three age groups. Conclusions: There was a significant difference in values of MMO in all the three age groups with boys having higher MMO values when compared to girls. Varying range of MMO values was observed within three age groups.

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Camino Junior, Rubens, Marcello Roberto Manzi, Matheus Furtado de Carvalho, João Gualberto de Cerqueira Luz, Angélica Castro Pimentel, and Maria Cristina Zindel Deboni. "Manual reduction of articular disc after traumatic extraction of mandibular third molar: a case report." Dental Press Journal of Orthodontics 20, no. 5 (October 2015): 101–7. http://dx.doi.org/10.1590/2177-6709.20.5.101-107.oar.

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Introduction: Disc displacement without reduction with limited opening is an intracapsular biomechanical disorder involving the condyle-disc complex. With the mouth closed, the disc is in an anterior position in relation to the condylar head and does not reduce with mouth opening. This disorder is associated with persistent limited mandibular opening.Case report:The patient presented severe limitation to fully open the mouth, interfering in her ability to eat. Clinical examination also revealed maximum assisted jaw opening (passive stretch) with less than 40 mm of maximum interincisal opening. Magnetic resonance imaging was the method of choice to identify the temporomandibular disorders.Conclusion: By means of reporting this rare case of anterior disc displacement without reduction with limited opening, after traumatic extraction of a mandibular third molar, in which manual reduction of temporomandibular joint articular disc was performed, it was possible to prove that this technique is effective in the prompt restoration of mandibular movements.

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Botticchio, Alice, Firas Mourad, Samuel Fernández Carnero, José Luis Arias Buria, Alejandro Santodomingo Bueno, Juan Mesa Jiménez, and Massimiliano Gobbo. "Short-Term Morphological Changes in Asymptomatic Perimandibular Muscles after Dry Needling Assessed with Rehabilitative Ultrasound Imaging: A Proof-of-Concept Study." Journal of Clinical Medicine 10, no. 2 (January 8, 2021): 209. http://dx.doi.org/10.3390/jcm10020209.

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Facial anatomical structures are not easily accessible to manual palpation. The aim of our study is to objectively assess temporomandibular joint and perimandibular muscles dimensions by means of sonographic measurements before and after dry needling (DN) in asymptomatic subjects. Seventeen subjects participated in this before-after study with a within-subject control. After random allocation, one side of the face was used for the intervention and the contralateral as control. DN was performed on the temporal, masseter, and sternocleidomastoid muscles. Each subject was examined bilaterally before, immediately after, and one month after the intervention through Rehabilitative Ultrasound Imaging (RUSI) of the temporomandibular articular disc and the three target muscles. Maximum mouth opening was measured at baseline and at one month. After a single DN session, articular disc thickness significantly decreased; muscles’ thicknesses (except for temporal thickness) significantly decreased immediately and at follow-up on the treated side; no significant changes resulted for the control side. The maximum mouth opening increased from 4.77 mm to 4.86 mm. RUSI may be useful to assess the dimensions and thickness of the temporomandibular disc and muscles before and after an intervention. DN influences muscle morphology, and it has a positive influence on mouth opening in the short term.

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Botticchio, Alice, Firas Mourad, Samuel Fernández-Carnero, José Luis Arias-Buría, Alejandro Santodomingo Bueno, Juan Mesa Jiménez, and Massimiliano Gobbo. "Short-Term Morphological Changes in Asymptomatic Perimandibular Muscles after Dry Needling Assessed with Rehabilitative Ultrasound Imaging: A Proof-of-Concept Study." Journal of Clinical Medicine 10, no. 2 (January 8, 2021): 209. http://dx.doi.org/10.3390/jcm10020209.

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Facial anatomical structures are not easily accessible to manual palpation. The aim of our study is to objectively assess temporomandibular joint and perimandibular muscles dimensions by means of sonographic measurements before and after dry needling (DN) in asymptomatic subjects. Seventeen subjects participated in this before-after study with a within-subject control. After random allocation, one side of the face was used for the intervention and the contralateral as control. DN was performed on the temporal, masseter, and sternocleidomastoid muscles. Each subject was examined bilaterally before, immediately after, and one month after the intervention through Rehabilitative Ultrasound Imaging (RUSI) of the temporomandibular articular disc and the three target muscles. Maximum mouth opening was measured at baseline and at one month. After a single DN session, articular disc thickness significantly decreased; muscles’ thicknesses (except for temporal thickness) significantly decreased immediately and at follow-up on the treated side; no significant changes resulted for the control side. The maximum mouth opening increased from 4.77 mm to 4.86 mm. RUSI may be useful to assess the dimensions and thickness of the temporomandibular disc and muscles before and after an intervention. DN influences muscle morphology, and it has a positive influence on mouth opening in the short term.

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Shaari, Ramizu, Teoh Eng Hwa, and Shaifulizan Abdul Rahman. "Gender Dependence In Mouth Opening Dimensions In Normal Adult Malaysians Population." Indonesian Journal of Dental Research 1, no. 2 (July 16, 2014): 84. http://dx.doi.org/10.22146/theindjdentres.9983.

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While measurement of mouth opening is an important clinica examination in diagnosis and management of oral disease, data on non-Western populations are limited. This study was therefore conducted to determine the range of mouth opening in normal Malaysian male and female adults. A total of 34 dental students of Universiti Sains Malaysia (USM) were chosen randomly and their maximum mouth opening was measured after being asked to open their mouth sufficiently to accommodate three fingers. Measurement was performed from the edge of the upper incisor to the lower incisor using a caliper divider. The difference of median values between male (47.6 mm) and female (40.8 mm) were significant respectively (p<0.05). Thus the width of mouth opening in Malaysian student population is gender dependent although further study with a larger sample size and with other ethnic groups should be carried out, focusing on age.

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Chaudhary, FarooqA, Basaruddin Ahmad, DanialQ Butt, Shoaib Hameed, and Ulfat Bashir. "Normal range of maximum mouth opening in pakistani population: A cross-sectional study." Journal of International Oral Health 11, no. 6 (2019): 353. http://dx.doi.org/10.4103/jioh.jioh_127_19.

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Choi, Hyejin, Chusung Kim, Daewoo Lee, Yeonmi Yang, and Jaegon Kim. "Measurement of Maximum Mouth Opening in 2 to 6 year-old Korean Children." JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY 42, no. 3 (August 31, 2015): 242–48. http://dx.doi.org/10.5933/jkapd.2015.42.3.242.

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Travers, K. H., P. H. Buschang, H. Hayasaki, and G. S. Throckmorton. "Associations between incisor and mandibular condylar movements during maximum mouth opening in humans." Archives of Oral Biology 45, no. 4 (April 2000): 267–75. http://dx.doi.org/10.1016/s0003-9969(99)00140-5.

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Polizzi, Alessandro, Vincenzo Quinzi, Simona Santonocito, Giuseppe Palazzo, Giuseppe Marzo, and Gaetano Isola. "Analysis of Earlier Temporomandibular Joint Disorders in JIA Patients: A Clinical Report." Healthcare 9, no. 9 (August 31, 2021): 1140. http://dx.doi.org/10.3390/healthcare9091140.

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The aim of this study was to analyse the structural characteristics of the temporo-mandibular joint (TMJ) and the dysfunctional consequences induced by disease in subjects with juvenile idiopathic arthritis (JIA). The study was conducted in 25 patients with JIA (median age (IQR), 13.9 (10.9–15.3)) and 26 healthy controls (median age (IQR), 14.3 (11.6–17.2)) years. All enrolled patients were subjected to anamnestic evaluation, laboratory parameters, JIA subclass, and type of therapy for the disease. A clinical-gnathological evaluation, anamnestic and dysfunctional index (Ai and Di), and magnetic resonance imaging of TMJs were performed in all patients. The test group showed a significant reduction (p < 0.001) regarding the clinical findings such as maximal mouth opening, left and rightward laterotrusion and protrusion, and a significant difference in the reported symptoms (TMJ sounds, reduced mouth opening and pain), and Ai and Di (p < 0.001) compared to healthy patients. Correlation analysis showed a significant correlation between the median duration of disease and the maximum mouth opening and between visual analogue scale (VAS) score and maximum mouth opening, leftward laterotrusion, rightward laterotrusion, and protrusion. The results obtained in this study suggest that patients with JIA presented a cohort of symptoms in TMJs in comparison with healthy controls. Moreover, a careful TMJs evaluation and an early diagnosis of TMJs dysfunction and regular follow-ups are recommended in order to prevent and reduce functional and chewing problems in patients with JIA.

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Colovic, Aleksandra, Olivera Jovicic, Zoran Mandinic, Jelena Mandic, and Jelena Juloski. "Oral and perioral soft tissue lesions and oral functions in patients with dystrophic epidermolysis bullosa." Vojnosanitetski pregled, no. 00 (2020): 128. http://dx.doi.org/10.2298/vsp201010128c.

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Background/Aim. Numerous oral manifestations may occur within dystrophic epidermolysis bullosa (DEB). Aim of the study was to examine oral and perioral soft tissues and oral functions in DEB patients over a period of one year. Methods. Twenty-four patients (1 month to 36 years old), were clinically examined initially (T0), after 6 months (T6) and after 12 months (T12). Appearance and localization of perioral and oral bullae and scars, maximum mouth opening, reduced vestibule depth, absence of lingual papillae and palatal rugae and restricted tongue movement due to scarring were monitored. The values of maximum mouth opening at the initial examination were compared to those measured in healthy control group of the same age. The age of patients and differences between dominant and recessive subtype of DEB were analyzed. Results. Average maximum mouth opening was significantly lower in DEB patients compared to healthy individuals. Oral and perioral bullae and scars, microstomia, and reduced vestibule depth were very common, with no statistically significant difference among T0, T6, and T12. The prevalence of restricted tongue movement due to scarring and the absence of lingual papillae and palatal rugae increased significantly over one year. Patients with microstomia, vestibule depth, and restricted tongue movement due to scarring were significantly older than patients without these characteristics. Lingual papillae and palatal rugae were more frequently absent in recessive than in dominant DEB. Conclusion. DEB causes significant changes in oral and perioral soft tissues and oral functions impairment.

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Asha V and Nevica Baruah. "Physiotherapy in Treatment of Oral Submucous Fibrosis Related Restricted Mouth Opening." International Healthcare Research Journal 1, no. 8 (November 10, 2017): 252–57. http://dx.doi.org/10.26440/ihrj/01_08/125.

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BACKGROUND: Multiple treatment approaches including surgical and non surgical therapies have been tried to improve restricted mouth opening in Oral Submucous Fibrosis (OSMF).AIM: To evaluate the effectiveness of physiotherapy in improving mouth opening, tongue protrusion and cheek flexibility in patients with OSMF.MATERIALS AND METHODS: Forty eight OSMF patients were assigned into three groups by drawing chits. Group 1: patients receiving intralesional injections of dexamethasone and hyaluronidase; Group 2: patients receiving physiotherapy; Group 3: patients receiving both intralesional injections and physiotherapy. Mouth opening, tongue protrusion and cheek flexibility was assessed in all the patients before intervention and at different time intervals of 2 weeks, 4 weeks and 6 weeks after treatment.RESULTS: Intragroup: In Group 2, the mean values of mouth opening, tongue protrusion and cheek flexibility were increased in time but were statistically insignificant. The mean values of mouth opening, tongue protrusion and cheek flexibility were markedly increased over a period of time in Group 3 and cheek flexibility was found to be statistically significant (p = 0.05).Intergroup: The mean differences of mouth opening, cheek flexibility and tongue protrusion was found to be maximum in group 3 and it was statistically significant (p=0.03) for tongue protrusion.CONCLUSION: Concurrent treatment with physiotherapy and intralesional injections was found to improve the mean mouth opening, tongue protrusion and cheek flexibility. Hence, physiotherapy can be used as an adjuvant treatment for OSMF as it is non invasive, more patient compliant and doesn’t require any financial resources.

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Valenzuela, Angélica, and Jorge Beltrán. "Disc stability after condylar discopexy with open surgery technique. A case report." International Journal of Medical and Surgical Sciences 6, no. 3 (November 14, 2019): 92–95. http://dx.doi.org/10.32457/ijmss.2019.028.

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Of the temporomandibular joint (TMJ) pathologies, temporomandibular disorders (TMD) of disc displacement present several clinical signs and symptoms, the main ones being joint pain measured with the visual analogue scale (VAS) reporting on average VAS>6, and functional incapacity measured in mm of mouth opening, reporting on average <30mm in cases of TMD. The present case corresponds to a patient with limitation of mouth opening <15mm, joint pain VAS= 8, and functional limitation. The subject’s condition was diagnosed clinically and by magnetic resonance imaging (MRI). The patient presented a Wilkes VI lateral dislocation of the left condyle disc without reduction, treated with open surgery discopexy, with disc fixation by monocryl suture and retrodiscal thermocoagulation. The patient showed a significant improvement in the removal of pain and in joint function. In clinical checkups at 1 month, 3 months, 6 months and 1 year, the patient showed decrease of pain levels, from VAS= 8 to VAS= 0, and mouth opening of <15mm to 36mm in the last checkup. Clinical and imaging evaluation at 4 years shows disc stability, with maximum mouth opening of 36 mm, with no disc displacement and clinically asymptomatic VAS = 0. In this case, discopexy with open surgery achieved improvements in functional capacity and removal of pain at short term. Long-term stability was associated with anatomical functions without alteration and without relapse of the symptomatology.

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CAETANO, Rafael da Silva, Paula Gabrielle de CASTRO, Paulo Henrique de Souza CASTRO, Alexandre Meireles BORBA, Álvaro Henrique BORGES, and Luiz Evaristo Ricci VOLPATO. "Limitation of mouth opening after radiotherapy for head and neck." RGO - Revista Gaúcha de Odontologia 64, no. 1 (March 2016): 24–29. http://dx.doi.org/10.1590/1981-863720160001000032923.

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ABSTRACT Objective: To evaluate the ability to open the mouth in patients undergoing radiotherapy for head and neck and the variables related to this limitation. Methods: 32 patients were evaluated six months after completion of radiotherapy sessions to treat cancer in the head and neck. The maximum mouth opening was measured using digital calipers and its association with gender, age, smoking, alcohol consumption, tumor location, chemotherapy and surgery were analyzed using the Mann-Whitney and Kruskal-Wallis tests at a level of significance of 95%. Results: The mean age of patients was 60.44 years; 87.5% were male; 81.2% were smokers; 65.6% regularly consumed alcohol. The average mouth opening was 43.17 mm and seven (21.9%) patients had trismus. The most common locations of the tumors were the tongue (31.3%) followed by the larynx and vocal folds with five (15.6%) each. No association was found between limited mouth opening and the other variables. Conclusion: In this sample, 21.9% of patients had trismus six months after completing radiotherapy. The variables gender, age, smoking habits and alcohol consumption, tumor location, previous surgery and adjunctive chemotherapy were not associated with limited mouth opening.

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Venkatraman, Anumitha, Farah Kaval, and Vinita Takiar. "Body Mass Index and Age Affect Maximum Mouth Opening in a Contemporary American Population." Journal of Oral and Maxillofacial Surgery 78, no. 11 (November 2020): 1926–32. http://dx.doi.org/10.1016/j.joms.2020.06.018.

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Naeije, M. "Local kinematic and anthropometric factors related to the maximum mouth opening in healthy individuals." Journal of Oral Rehabilitation 29, no. 6 (June 2002): 534–39. http://dx.doi.org/10.1046/j.1365-2842.2002.00895.x.

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Gangavelli, Ranganath, Anupama Prabhu, Priyadarshini Sundaresan, and Quratul Ain Sameera. "Reliability of a novel method for measuring maximal voluntary mouth opening in patients with oral carcinoma." International Journal of Therapy and Rehabilitation 26, no. 9 (September 2, 2019): 1–7. http://dx.doi.org/10.12968/ijtr.2017.0069.

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Background/Aims Mouth opening is a routine and vital activity of daily life that facilitates ingestion and speech. It is often found to be limited in patients with oral carcinoma. Measuring mouth opening is essential to detect the therapeutic effect of an intervention aiming to improve it. During measurement, the procedure needs to be reliable, simple, inexpensive and safe. This study aimed to determine the intrarater and interrater reliability of a novel method of measuring maximal voluntary mouth opening in patients with oral carcinoma. Methods Patients aged between 40 and 60 years of either gender with a diagnosis of oral carcinoma and presenting with difficulty in mouth opening were recruited. The distance between incisors was marked on standard sized paper slips as the participants performed maximal voluntary mouth opening. Distance between the markings was measured with a ruler in millimeters. The measurement procedures were carried out by two independent investigators. Results A total of 15 patients (12 male and 3 female) with a mean age of 52.53 ± 8.28 years participated in the study. Mean maximal voluntary mouth opening measure was <35 mm, indicating restricted mouth opening in these patients. Intrarater reliability of 0.95 (0.87–0.98) and interrater reliability of 0.96 (0.89–0.98) were found for the measurements. Conclusions The reliability of maximal voluntary mouth opening measurement using this novel technique was found to be excellent. This technique can be used in the routine clinical evaluation of patients with oral carcinoma.

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Costa, Davidson Ribeiro, David Ribeiro Costa, Diego Rodrigues Pessoa, Leandro Júnio Masulo, Emília Ângela Lo Schiavo Arisawa, and Renata Amadei Nicolau. "Efeito da terapia LED na disfunção temporomandibular: estudo de caso." Scientia Medica 27, no. 2 (May 6, 2017): 25872. http://dx.doi.org/10.15448/1980-6108.2017.2.25872.

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*** Effect of LED therapy on temporomandibular disorder: a case study ***AIMS: To evaluate the effect of light emitting diode (LED) therapy on temporomandibular disorder.CASE DESCRIPTION: A woman diagnosed with temporomandibular disorder was subjected to four LED therapy sessions at a seven-day interval. In the initial examination of the temporomandibular joint the patient presented a mouth opening without pain of 23 mm, a maximum opening of 25 mm and a maximum opening with the aid of 27 mm. After the treatment, there was an increase of 7 mm in the opening without pain between the first and last evaluation, while the maximum opening of the mouth and the maximum opening with aid increased 6 mm between the first and last evaluation. After 21 days of treatment, a 50% reduction in painful sites was detected on the palpation examination. After the end of the treatment, the visual analog pain scale detected a decrease in pain intensity on both sides, and there was a decrease in the total mean pain intensity. By analyzing the responses to the Medical Outcomes Study 36-item Short Form Health Survey (SF-36), of the eight quality of life domains evaluated, four showed improvement. CONCLUSIONS: In this case study, after LED therapy there was reduction in pain intensity and increase of the mandibular range of motion. The resolution of the signs and symptoms of temporomandibular disorder resulted in patient’s better quality of life.

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Marchesan, Irene. "Lingual frenulum: Quantitative evaluation proposal." International Journal of Orofacial Myology 31, no. 1 (November 1, 2005): 39–48. http://dx.doi.org/10.52010/ijom.2005.31.1.4.

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The purpose of this study was to establish a quantitative method to classify lingual frenulum as normal and altered. Methods: 98 people were included in this study. All measurements were made with maxium opening of the mouth. A digital caliper was used to measure the length of the frenulum under three conditions: a) with the tongue tip on the incisal papilla; b) with the tongue sucked up and maintained against the hard palate; and c) with tongue stretching over a spatula. Results: observations indicated that the most useful and statistically significant way of measuring frenulum length was achieved with maximum mouth opening and the tongue tip on the incisal papilla. Conclusion: this quantitative method was demonstrated to be effective for identifying and distinguishing normal and altered frenular length.

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Ghimire, Ashish, B. Bhattarai, A. Subedi, and S. Koirala. "Adult Sized Fibreoptic Bronchoscope Aided Nasal Intubation In A Child with Left Sided Temporomandibular Joint Ankylosis." Health Renaissance 12, no. 1 (January 28, 2015): 49–51. http://dx.doi.org/10.3126/hren.v12i1.11986.

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In temporomandibular joint (TMJ) ankylosis, direct laryngoscopy and intubation are not feasible. The scenario becomes more challenging in paediatric patients. The best technique would be fibreoptic bronchoscope (FOB) aided nasal intubation. We report successful nasal intubation with the aid of orally placed adult sized fibreoptic bronchoscope in a child with a limited mouth opening. A 6-yr-old child was brought with history of inability to open the mouth. Diagnosis of left sided TMJ ankylosis was made and interpositional arthoplasty was planned. Airway examination revealed interincisor gap of 4.6 mm. Due to tooth decay, a maximum mouth opening of 5.2 mm was observed on the left side. The airway was successfully secured through the nasal route aided by the adult sized bronchoscope inserted orally through the gap between the eroded upper and the lower teeth. Adult sized fibreoptic bronchoscope may be useful in aiding nasal intubation in pediatric patients if the mouth opening permits its introduction orally.DOI: http://dx.doi.org/10.3126/hren.v12i1.11986Health Renaissance 2014;12(1):49-51

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Yura, Shinya, Kazuhiro Ooi, and Yuri Izumiyama. "Relationship between the Effectiveness of Arthrocentesis under Sufficient Pressure and Conditions of the Temporomandibular Joint." ISRN Dentistry 2011 (May 31, 2011): 1–5. http://dx.doi.org/10.5402/2011/376475.

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Background. The purpose of this study is to investigate the conditions of the temporomandibular joint relative to the effectiveness of an arthrocentesis-like enforced manipulation technique followed by irrigation under high pressure in patients with closed lock. Methods. We performed arthroscopic examination and manipulation followed by irrigation as the initial treatment in 50 joints with closed lock. Relationship between the effectiveness of the procedure and conditions of the temporomandibular joint was statistically analyzed using multiple regression analysis. Results. Significant inverse correlations were found between the extent of improvement in maximum mouth opening after treatment and the initial maximum opening before treatment. There were no significant correlations between improvement of joint pain at mouth opening and in biting and conditions of the temporomandibular joint. Conclusions. Pathologic conditions of the temporomandibular joint did not have an influence on the efficacy of the technique. This result suggests that this procedure has wider application than conventional arthrocentesis.

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Bhardwaj, Yogesh, and Saurabh Arya. "Post—Ankylotic Temporomandibular Joint Reconstruction Using Autogenous/Alloplastic Materials: Our Protocol and Treatment Outcomes in 22 Patients." Craniomaxillofacial Trauma & Reconstruction 9, no. 4 (December 2016): 284–93. http://dx.doi.org/10.1055/s-0036-1584396.

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The purpose of this study was to evaluate the various options of autogenous and alloplastic reconstruction modalities available for posttraumatic temporomandibular joint (TMJ) ankylosis. In a retrospective study of 22 patients, various autogenous/alloplastic materials were used based on type and severity of ankylosis and age of patient. Final outcome of reconstruction was critically evaluated in terms of maximal mouth opening, occlusion, and facial symmetry. Fourteen patients (63.63%) developed TMJ ankylosis due to road traffic accidents and eight patients (36.36%) had a history of fall. The mean age was 15.61 years. The mean preoperative maximum interincisal mouth opening (MIMO) for the entire series was 3.39 mm ± 2.16 and postoperative MIMO was 43.69 mm ± 2.63. Costochondral grafts were used in seven children, whereas titanium reconstruction plate with condylar head was used in five adults and interpositional arthroplasties using temporalis muscle, temporalis fascia, and relocation of the articular disc were used in the rest of the ten patients. We conclude that all these age-specific treatment modalities yield clinically comparable results in terms of postoperative mouth opening and facial symmetry with no evidence of reankylosis in a follow-up ranging from 24 to 96 months.

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Kim, Dae-Seung, Soon-Chul Choi, Sam-Sun Lee, Min-Suk Heo, Kyung-Hoe Huh, Soon-Jung Hwang, and Won-Jin Yi. "Correlation between 3-dimensional facial morphology and mandibular movement during maximum mouth opening and closing." Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology 110, no. 5 (November 2010): 648–56. http://dx.doi.org/10.1016/j.tripleo.2010.06.007.

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PALMA, VICTOR DE MELLO, ALEXANDER THOMAS, EVA AGUIAR ALMEIDA CAMPOS CASTRO TORRIANI, LUISA BERLATO SILVA, CRISTIANE CADEMARTORI DANESI, and KíVIA LINHARES FERRAZZO. "STIMULATED SALIVARY FLOW AND MAXIMUM MOUTH OPENING AT DIFFERENT TIMES POSTRADIOTHERAPY: A CROSS-SECTIONAL STUDY." Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology 130, no. 3 (September 2020): e267. http://dx.doi.org/10.1016/j.oooo.2020.04.722.

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Calixtre, Leticia Bojikian, Theresa Helissa Nakagawa, Francisco Alburquerque-Sendín, Bruno Leonardo da Silva Grüninger, Lianna Ramalho de Sena Rosa, and Ana Beatriz Oliveira. "Inter- and intra-rater reliability of 3D kinematics during maximum mouth opening of asymptomatic subjects." Journal of Biomechanics 64 (November 2017): 245–52. http://dx.doi.org/10.1016/j.jbiomech.2017.09.038.

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Fukuoka, Hiroshi, Nobuko Fukuoka, Yuki Daigo, Erina Daigo, Toshiro Kibe, and Masatsugu Ishikawa. "Initial treatment for patients with temporomandibular disorders: pain relief and muscle tone relief by photobiomodulation therapy using carbon dioxide laser." Lasers in Dental Science 4, no. 4 (September 15, 2020): 203–9. http://dx.doi.org/10.1007/s41547-020-00107-6.

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Abstract Purpose To investigate the efficacy of photobiomodulation therapy (PBMT) with a CO2 laser (Bel Laser, Takara Belmont, CO. Ltd., Osaka, Japan; wavelength 10.6 μm) (tissue surface absorption effects) in conjunction with mouth opening training in patients with temporomandibular disorders (TMDs). Methods This is a retrospective study on TMD patients with pre- and post-treatment assessments. The study included 36 patients (7 men and 29 women, mean age 58.2 years (SD 18.3)) (after excluding 4 patients due to dropouts, loss to follow up or refusal of treatment) with symptoms of pain and muscle tenderness during mouth opening. Treatment included Amfenac sodium (50 mg per day, thrice daily after meals) for 1–2 weeks for acute symptoms. Based on the diagnostic criteria for TMD, we identified the trigger point (muscle contracture site). We implemented muscle massage and stretching therapy as mouth opening training after PBMT. The laser irradiance conditions were as follows: output 1.5 W, on time 0.01 s, off time 0.05 s, and repeat pulse. Distance between the laser source and the skin was approximately 10 cm; irradiation time was 3 min (approximately 56.9 J/cm2). Mouth opening training involved massaging the areas of muscle contracture that were the trigger points, as well as muscle stretching to improve temporomandibular joint flexibility. One PBMT cycle and mouth opening training was conducted per week for four cycles. We determined the effects before and after intervention. A numeric rating scale (NRS; range 0–10) was used to evaluate pain, and maximum mouth opening (MMO) capacity was also assessed. Data were analyzed using the Wilcoxon signed-rank test. Results The mean (SD) pain levels, as determined via NRS, were 4.9(3.6) and 2.7 (3.0) (p < 0.001), before and after four treatment cycles, respectively. The mean (SD) of MMO was 39.6 (5.9) and 44.6 mm (4.8) (p < 0.001), before and after treatment, respectively. Conclusion The current study suggests that PBMT using a CO2 laser combined with mouth opening training is effective for the treatment of temporomandibular disorders.

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Macedo De Sousa, Bruno, Nansi López-Valverde, Antonio López-Valverde, Francisco Caramelo, Javier Flores Fraile, Julio Herrero Payo, and María João Rodrigues. "Different Treatments in Patients with Temporomandibular Joint Disorders: A Comparative Randomized Study." Medicina 56, no. 3 (March 5, 2020): 113. http://dx.doi.org/10.3390/medicina56030113.

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Background and Objectives: Temporomandibular joint disorders (TMJDs) are associated with pain and reduced jaw mobility. The aim of this study was to compare the outcome of patients with TMJ arthralgia when submitted to four different treatment modalities, in some cases using intra-articular injections of substances with anti-inflammatory properties and in others, a more conservative approach consisting only of a bite splint. Materials and Methods: The sample was made up of 80 patients, randomly distributed into 4 groups of 20 patients each. Each patient was given a nocturnal bite splint. One of the groups was treated with the bite splint only, while each patient in the other 3 was injected with betamethasone, sodium hyaluronate, or platelet-rich plasma in addition to using the bite splint. Two variables were assessed, namely pain intensity between 0 to 10 according to the visual analogue scale and maximum pain-free mouth opening in mm. The patients were evaluated at four different points: at the beginning of the treatment, as well as one week, one month and six months after initiation. Results: The results showed that maximum pain-free mouth opening improved in all the groups that made up the sample, with either a reduction in pain severity or with no pain. However, the group injected with platelet-rich plasma yielded the best results after six months, while patients treated with sodium hyaluronate or betamethasone obtained the best results at the end of the first week. Conclusions: We concluded that all the treatments used caused a reduction in pain and increased pain-free mouth opening. The splint combined with the platelet-rich plasma injection achieved long-term success.

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Sugihara, Daisuke, Misao Kawara, Hiroshi Suzuki, Takashi Asano, Akihiro Yasuda, Hiroki Takeuchi, Toshiyuki Nakayama, Toshikazu Kuroki, and Osamu Komiyama. "Mandibular Jaw Movement and Masticatory Muscle Activity during Dynamic Trunk Exercise." Dentistry Journal 8, no. 4 (December 2, 2020): 132. http://dx.doi.org/10.3390/dj8040132.

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The examination of jaw movement during exercise is essential for an improved understanding of jaw function. Currently, there is no unified view of the mechanism by which the mandible is fixed during physical exercise. We hypothesized that during strong skeletal muscle force exertion in dynamic exercises, the mandible is displaced to a position other than the maximal intercuspal position and that mouth-opening and mouth-closing muscles simultaneously contract to fix the displaced mandible. Therefore, we simultaneously recorded mandibular jaw movements and masticatory muscle activities during dynamic trunk muscle force exertion (deadlift exercise) in 24 healthy adult males (age, 27.3 ± 2.58 years). The deadlift was divided into three steps: Ready (reference), Pull, and Down. During Pull, the mandibular incisal point moved significantly posteriorly (−0.24 mm, p = 0.023) and inferiorly (−0.55 mm, p = 0.019) from the maximal intercuspal position. Additionally, temporal, masseter, and digastric muscles were activated simultaneously and significantly during Pull (18.63 ± 17.13%, 21.21 ± 18.73%, 21.82 ± 19.97% of the maximum voluntary contraction, respectively), with maintained activities during Down (p < 0.001). Thus, during dynamic trunk muscle force exertion, the mandibular incisal point moved to a posteroinferior position without tooth-touch (an open-mouth position). Simultaneously, the activities of the mouth-opening digastric muscles and the mouth-closing temporal and masseter muscles led to mandibular fixation, which is a type of mandible fixing called bracing.

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Erdohelyi, Balázs, Péter István Szabó, and Endre Varga. "Stress in the Mandible with Splinted Dental Implants caused by Limited Flexure on Mouth Opening: An in vitro Study." International Journal of Experimental Dental Science 1, no. 1 (2012): 8–13. http://dx.doi.org/10.5005/jp-journals-10029-1002.

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ABSTRACT Aim The aim of this study was to evaluate the stress developed in the bar connecting implants and in the mandible as a result of the elastic deformation of the mandible during mouth opening when using a finite element method (FEM). Materials and methods A three-dimensional model of an edentulous mandible was generated based on the computer tomography (CT) data of a patient. Two cylindrical implants (diameter 4.3 mm, length 13 mm) were inserted in the area of the mandibular canine, premolar and molar in the mandibular model. Implants were connected with a rigid bar (width 2 mm, height 3 mm), and mouth opening was simulated on the threedimensional (3D) model. The location and magnitude of maximum von Misess stress that occurred in the mandible and in the bar were estimated. Results The highest stress level in the mandible (4.5 GPa) and in the splint (32 GPa) was measured in the longest fixed partial denture with the implants in the mandibular left canine and left second molar position. The maximum stress in the bone was measured distal to the splinted implants. Conclusion Since, great distance between splinted implants caused high stress during mouth opening, due to mandibular deformation, the use of a short span fixed partial denture supported by implants in the molar region of the edentulous mandible is probably more advantageous. How to cite this article Radnai M, Erdohelyi B, Szabó PI, Varga E. Stress in the Mandible with Splinted Dental Implants caused by Limited Flexure on Mouth Opening: An in vitro Study. Int J Exper Dent Sci, 2012;1(1):8-13.

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Kumar, Arun, Richa Mehta, Samir Dutta, Mahesh Goel, and Anita Hooda. "Maximal mouth opening in Indian children using a new method." Journal of Cranio-Maxillary Diseases 1, no. 2 (2012): 79. http://dx.doi.org/10.4103/2278-9588.105680.

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Muto, Toshitaka, and Masaaki Kanazawa. "Positional change of the hyoid bone at maximal mouth opening." Oral Surgery, Oral Medicine, Oral Pathology 77, no. 5 (May 1994): 451–55. http://dx.doi.org/10.1016/0030-4220(94)90222-4.

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Deng, T. g., C. k. Liu, L. g. Wu, P. Liu, J. j. Wang, X. z. Sun, L. l. Zhang, et al. "Association between maximum mouth opening and area of bony fusion in simulated temporomandibular joint bony ankylosis." International Journal of Oral and Maxillofacial Surgery 49, no. 3 (March 2020): 369–76. http://dx.doi.org/10.1016/j.ijom.2019.06.030.

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Schmidt, Alexander, Leona Klussmann, Maximiliane A. Schlenz, and Bernd Wöstmann. "Elastic deformation of the mandibular jaw revisited—a clinical comparison between digital and conventional impressions using a reference." Clinical Oral Investigations 25, no. 7 (January 13, 2021): 4635–42. http://dx.doi.org/10.1007/s00784-021-03777-z.

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Abstract Objectives Due to the partly strongly differing results in the literature, the aim of the present study was to investigate a possible deformation of the mandible during mouth opening using an intraoral scanner (IOS) and a conventional impression for comparison with a reference aid. Materials and methods Four steel spheres were reversibly luted in the mandibular (n = 50) with a metallic reference aid at maximum mouth opening (MMO). Two digital impressions (Trios3), at MMO and at slightly mouth opening SMO and a conventional impression (Impregum), were taken as the measuring accuracy of the reference structure was already known. Difference between MMO-SMO for digital impressions and deviations between digital and conventional (SMO) were calculated. Furthermore, the angle between the normal vectors of two constructed planes was measured. Statistical analysis was performed with SPSS25. Results Deviations for linear distances ranged from −1 ± 3 μm up to 17 ± 78 μm (digital impressions, MMO-SMO), from 19 ± 16 μm up to 132 ± 90 μm (digital impressions, SMO), and from 28 ± 17 μm up to 60 ± 52 μm (conventional impressions, SMO). There were no significant differences for digital impressions (MMO-SMO), and there were significant differences between the conventional and digital impressions at SMO. Conclusions Based on the results of the present study, no mandibular deformation could be detected during mouth opening with regard to the digital impressions. The results were rather within the measuring tolerance of the intraoral scanner. Clinical relevance Based on the present study, no deformation of the mandibular during mouth opening could be observed at the level previously assumed. Therewith related, dental techniques related to a possible mandibular deformation therefore should be reconsidered.

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Bonjardim, Leonardo Rigoldi, Maria Beatriz Duarte Gavião, Luciano José Pereira, and Paula Midori Castelo. "Mandibular movements in children with and without signs and symptoms of temporomandibular disorders." Journal of Applied Oral Science 12, no. 1 (March 2004): 39–44. http://dx.doi.org/10.1590/s1678-77572004000100008.

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This research aimed to evaluate mandibular movements in children with and without signs and symptoms of temporomandibular dysfunction. The sample taken consisted of 99 children aged 3 to 5 years distributed in two groups: I - Absence of signs and/or symptoms of TMD (25 girls/40 boys); II - Presence of signs and symptoms of TMD (16 girls/18 boys). The symptoms were evaluated through an anamnesis questionnaire answered by the child's parents/caretakers. The clinical signs were evaluated through intra- and extraoral examination. Maximum mouth opening and left/right lateral movements were measured using a digital caliper. The maximum protrusive movement was measured using a millimeter ruler. The means and standard deviations for maximum mouth opening in Group I and Group II were 40.82mm±4.18 and 40.46mm±6.66, respectively. The values found for the left lateral movement were 6.96mm±1.66 for Group I and 6.74mm±1.55 for Group II, while for the right lateral movement they were 6.46mm±1.53 and 6.74mm±1.77. The maximum protrusion movements were 5.67mm±1.76 and 6.12mm±1.92, in Groups I and II, respectively. The mandibular movement ranges neither differed statistically between groups nor between genders. FAPESP Process 96/0714-6.

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Park, YounJung, Taeyang Lee, Minkyeong Seog, Seong-Oh Kim, Joohee Kim, Jeong-Seung Kwon, and Chung-Min Kang. "An Analysis of the Temporomandibular Joint Range of Motion and Related Factors in Children and Adolescents." Children 8, no. 6 (June 17, 2021): 515. http://dx.doi.org/10.3390/children8060515.

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This study was designed to establish safe guidelines for pediatric dental practice regarding temporomandibular joint (TMJ) range of motion (ROM) and mouth area (MA). A total of 438 children aged 3–15 years old of homogenous ethnicity participated in the study; the distribution of participants was approximately equal (sex; n = 15; age, n = 30). Maximum mouth opening (MMO), body height, weight, and age of each participant were recorded, and the TMJ ROM including anterior and lateral movements, MA, and mouth width were documented. Males showed higher mouth width, MMO, and MA values than females. MMO and MA increased with age, height, and weight in a statistically significant manner. MMO of 40 mm is reached by the age of 5.2 years, at a height of 105.9 cm and a weight of 18.6 kg. MMO showed a moderate correlation with age, height, weight, and mouth width, and MA moderately correlated with mouth width. Anterior and lateral movements did not show any close relation to these aforementioned factors. The findings of this study suggest that forcible mouth opening over 40 mm should be more cautiously considered, especially in children shorter than 105 cm, lighter than 18 kg and in children under 5 years old.

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Martin-Flores, M., P. V. Scrivani, E. Loew, C. A. Gleed, and J. W. Ludders. "Maximal and submaximal mouth opening with mouth gags in cats: Implications for maxillary artery blood flow." Veterinary Journal 200, no. 1 (April 2014): 60–64. http://dx.doi.org/10.1016/j.tvjl.2014.02.001.

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Abe, Susumu, Akane Miyagi, Kaoru Yoshinaga, Yoshizo Matsuka, Fumihiro Matsumoto, Emi Uyama, Yoshitaka Suzuki, Masamitsu Oshima, Kazuo Okura, and Eiji Tanaka. "Immediate Effect of Masticatory Muscle Activity with Transcutaneous Electrical Nerve Stimulation in Muscle Pain of Temporomandibular Disorders Patients." Journal of Clinical Medicine 9, no. 10 (October 16, 2020): 3330. http://dx.doi.org/10.3390/jcm9103330.

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Transcutaneous electrical nerve stimulation (TENS) is a non-invasive treatment modality for acute and chronic pain. However, little information for muscle activity is available on the immediate effects of TENS in masticatory muscle pain related to temporomandibular disorders (TMDs). The present study aimed to evaluate the immediate effects of TENS treatment on TMD-related muscle pain. Thirty-six patients with TMD-related muscle pain and 39 healthy subjects served as TMD and control groups, respectively. For objective evaluations, maximum mouth opening, and maximum bite force were measured before and after TENS. The pain intensity was assessed according to a 100-mm visual analog scale (VAS). TENS was applied to painful muscles for 20 min with frequencies of 100–200 Hz. The treatment outcome was evaluated using Global Rating of Change (GRC) scales. In the TMD group, VAS values significantly decreased after TENS. Although there was significant increase in the maximum mouth opening after TENS for only TMD group, the maximum bite force of both groups was significantly greater after TENS. According to GRC scales, one patient with TMD-related muscle pain expressed negative feelings after TENS. Conclusively, TENS treatment might quickly relieve pain in masticatory muscles and improve masticatory functions in patients with TMD-related muscle pain.

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Bachhav, Vinay Chila, and Meena Ajay Aras. "A simple method for fabricating custom sectional impression trays for making definitive impressions in patients with microstomia." European Journal of Dentistry 06, no. 03 (July 2012): 244–47. http://dx.doi.org/10.1055/s-0039-1698957.

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ABSTRACTObjectives: A maximum mouth opening that is smaller than the size of a complete denture can make prosthetic treatment challenging. This article describes a simple technique used to fabricate maxillary and mandibular custom sectional impression trays for making definitive impressions in patients with microstomia. (Eur J Dent 2012;6:244-247)

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Kijak, Edward, Danuta Lietz-Kijak, Bogumiła Frączak, Zbigniew Śliwiński, and Jerzy Margielewicz. "Assessment of the TMJ Dysfunction Using the Computerized Facebow Analysis of Selected Parameters." BioMed Research International 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/508069.

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The Purpose of the Paper.Qualitative and quantitative analysis of selected parameters of mandible movements, electronically registered in patients with temporomandibular joint dysfunction and healthy ones.Material. Function test of the mandible movements was conducted in 175 patients. Gender distribution was 143 women and 32 men, aged 9 to 84.Methods. The studied population, after accurate clinical examination, was divided into age groups with the range of five years. All the patients had Zebris JMA computerized facebow examination done, according to the generally accepted principles and procedures.Results.Mean values of mouth opening calculated to 45.6 mm in healthy group and 37.6 mm in TMJ dysfunction group. Mean length of condylar path amounted to39±7% of the maximum value of mouth opening in the group of healthy people,44±11% in the case of muscle-based disorders, and35±11% with joint-based. The mean value of the condylar path inclination oscillated in the range of 25° to 45°.Conclusions. The ratio of length of the condylar path to the size of mouth opening may be a significant value characterising the type and degree of intensification of the TMJ dysfunctions.

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Karan, Nazife Begüm, Neziha Keçecioğlu, and Hüseyin Ozan Akıncı. "The effect of arthrocentesis on maximum mouth opening after bilateral coronoidotomy procedure: A case of coronoid hyperplasia." Yeditepe Dental Journal 15, no. 1 (2019): 132–36. http://dx.doi.org/10.5505/yeditepe.2019.69672.

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Chen, Hong-Sen, Pei-Ling Yang, Chen-Yi Lee, Ker-Kong Chen, and Kun-Tsung Lee. "Analysis of maximum mouth opening and its related factors in 3- to 5-year-old Taiwanese children." Odontology 103, no. 1 (October 31, 2013): 84–88. http://dx.doi.org/10.1007/s10266-013-0136-z.

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Wetzels, Jan-Willem G. H., Matthias A. W. Merkx, Anton F. J. de Haan, Ron Koole, and Caroline M. Speksnijder. "Maximum mouth opening and trismus in 143 patients treated for oral cancer: A 1-year prospective study." Head & Neck 36, no. 12 (January 30, 2014): 1754–62. http://dx.doi.org/10.1002/hed.23534.

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Journal articles on the topic 'Maximum opening of the mouth'

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