Relevant bibliographies by topics / Root dentin canlal

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
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  5. Conference papers

Academic literature on the topic 'Root dentin canlal'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Root dentin canlal"

1

Said, Fadi, and Moti Moskovitz. "Effect of Calcium Hydroxide as a Root Canal Dressing Material on Dentin Fracture Strength In Primary Teeth–In Vitro Study." Journal of Clinical Pediatric Dentistry 42, no. 2 (January 1, 2018): 146–49. http://dx.doi.org/10.17796/1053-4628-42.2.11.

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Objectives: The aim of the present study was to assess the effect of calcium hydroxide as a root canal dressing material on dentin microtensile fracture strength in human primary teeth in vitro. Study design: Thirty primary anterior teeth with root canals packed with calcium hydroxide were divided into groups of ten and immersed in saline at room temperature for 7, 30 and 90 days. Ten teeth with root canals filled with sterile saline were the control group. Microtensile fracture strength was measured in Mechanical tester Lloyd testing machine. Results: There was a significant difference (P < 0.05) between the fracture strength of the calcium hydroxide-filled teeth after 90 days (19.1 MPa) compared with the control (35.8 MPa). Dentin microtensile fracture strength of the calcium hydroxide-filled teeth decreased at an average of 0.142 MPa per day. Conclusion: Calcium hydroxide placed in root canals for an extended time had a significantly negative effect on root strength. Long-term success of root canal treatment in primary anterior teeth is estimated as 65% with most of the failures result from trauma recurrence. Clinical Relevance: Our results stress the need to evaluate the pros and cons of root canal treatment compared to extractions of non-vital primary incisors.
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Memon, Mahwish, Feroze Ali Kalhoro, Salman Shams, and Suneel Kumar. "ROOT CANAL DENTIN;." Professional Medical Journal 24, no. 01 (January 18, 2017): 166–70. http://dx.doi.org/10.29309/tpmj/2017.24.01.415.

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Objectives: To compare the mean thickness of hybrid layer by using selfetchadhesive at coronal dentin and root canal dentin with scanning electronic microscope.Study Design: Experimental study. Setting: Liaquat University of Medical & Health Sciences,Jamshoro. Period: July 2009 to 31st December 2009. Material & Methods: Fifty permanentsingle rooted extracted teeth were used in this study. The sample size was divided into twoequal groups of 25 teeth each. Group 1(n=25) self etch adhesive was applied on coronal dentinthen light cured for 10seconds. Group 2(n=25)self etch adhesive to root canal dentin and thenlight cured was applied for 10seconds then 2mm thick layer was placed to adhesive bondedsurfaces of coronal and root canal dentin. Data were analyzed using t-test of significance. p-Value was significant at ≤0.05. Results: The mean ±standard deviation of thickness of hybridlayer was 2.3088 ±1.027 um in coronal dentin; and it was 2.1104 ±1.0316 um in root canaldentin. Conclusion: There is no statistically significant differences in mean thickness of hybridlayer between root canal dentin and coronal dentin with self etch adhesive.
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Nurhapsari, Arlina. "PENATALAKSANAAN GIGI PREMOLAR KEDUA MAKSILA DENGAN SALURAN AKAR VERTUCCI TIPE V - laporan Kasus." ODONTO : Dental Journal 1, no. 1 (May 1, 2014): 53. http://dx.doi.org/10.30659/odj.1.1.53-56.

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Background: The aim of the case report is to demonstrate the importance of knowing the root canals configuration in the maxillary second premolars. Maxillary second premolars usually have one root canal, however in several cases there is more than one root canal with a variety of configurations. Method: multiple visit root canal treatment with a crown down technique on the maxillary second premolar with unusual root canals configuration which is confirmed using radiograph. Result: Based on radiograph, it was identified Vertucci type V root canal on the maxillary second premolars. After biomechanical preparation, obturation was conducted. When patient controlled, there were not problem and inflammation. Conclusion : This report described and discussed about the possibility of root canals variation on the maxillary second premolars. Careful examination using radiograph and deep knowledge, it is identified by the clinician in treating root canal treatment on that premolars.
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Leonardi, Denise Piotto, Gilson Blitzkow Sydney, Mario Tanomaru Filho, Flares Baratto-Filho, Samantha Schaffer Pugsley Baratto, and Paulo Sergio Cerri. "Performance of RaCe Instrumentation System in Curved Root Canals: A Comprehensive Analysis by Three Study Methods." Brazilian Dental Journal 24, no. 3 (June 2013): 230–34. http://dx.doi.org/10.1590/0103-6440201301920.

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In this study, curved maxillary molar root canals were instrumented with RaCe rotary system to evaluate: 1. the occurrence of canal transportation using a radiographic platform; 2. the action of the instruments on the dentin walls, centering ability and canal enlargement by analysis of digital images; and the percentage of regular dentin surfaces and debris within the canal by histological analysis. Ten mesiobuccal roots of extracted human maxillary molars were embedded in acrylic resin and sectioned at the middle and apical thirds. Root canal shaping was performed using the RaCe rotary system at 250 rpm and 1 Ncm torque. Each instrument set was used five times according to a crown-down technique in the following sequence: 40/0.10, 35/0.08, 25/0.06, 25/0.04, 25/0.02 (working length - WL), 30/0.02 (WL) and 35/0.02 (WL). Each instrument was inserted until resistance was felt and then pulled back, followed by brushing movements towards all canal walls. Each specimen was assessed by three study methods: radiographic platform, digitized image assessment and histological analysis. The radiographic platform showed lack of apical transportation. No statistically significant difference (Wilcoxon test, p>0.05) was found between the middle and apical thirds regarding instrument action on dentin walls, centering ability, area of root canal enlargement, percentage of regular dentin surfaces and debris within the root canal. It may be concluded that RaCe system is a suitable method for the preparation of curved root canals, regarding the maintenance of root canal original path, action on dentin walls, canal enlargement and removal of debris from the root canal lumen.
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Tennert, Christian, Yoana Zinovieva, Kalin Shishkov, Lamprini Karygianni, Makus Jörg Altenburger, Richard J. Wierichs, and Ali Al-Ahmad. "Improving the Efficiency of Photodynamic Chemotherapy in Root Canals against Enterococcus faecalis In Vitro." Antibiotics 9, no. 9 (August 26, 2020): 543. http://dx.doi.org/10.3390/antibiotics9090543.

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The aim of this study was to evaluate the effect of photoactivated chemotherapy (PACT) on Enterococcus faecalis (E. faecalis) biofilms in root canals using an 90% isopropanol (IPA)-based photosensitizer and removing excess photosensitizer before light incubation. Three hundred and seven extracted human teeth with one root canal were infected with E. faecalis for 72 h and treated in groups: IPA irrigation; PACT; PACT and final rinse with IPA; PACT with photosensitizer removal using either 0.9% NaCl solution or sterile paper points or both; PACT using IPA-based photosensitizer with and without a final rinse of IPA. Root canals were sampled using sterile paper points and dentin chips collected from the root canal walls. Additionally, SEM (Scanning Electron Microscopy) images of the specimens were taken to evaluate the root canal walls for residue bacterial contamination. In all antimicrobial treatment groups treatments E. faecalis counts were significantly reduced in the root canals. Using IPA-based photosensitizer the antimicrobial effect of PACT was significantly enhanced. Irrigation with IPA alone or after PACT significantly increased the antimicrobial effect compared to PACT alone. The collected dentin chips revealed the highest amount of culture negative root canals (10%) after PACT using IPA-based photosensitizer. In the other groups, the culture negative samples ranged from only 0–2 specimens of 30 specimens. REM images show remaining E. faecalis cells on the root canal wall and inside dentin tubules. Using IPA-based photosensitizer significantly enhanced the antimicrobial effect of PACT against E. faecalis in the root canals.
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Ballal, Vasudev. "Microhardness of root canal dentin." Saudi Endodontic Journal 4, no. 3 (2014): 158. http://dx.doi.org/10.4103/1658-5984.138154.

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Abbas, Farah Salahalden, Nadeen Jamal Abdulredah, and Amer Salman Hassan. "Effect of Final Irrigation Protocol on Dentin Microhardness." Biomedical and Pharmacology Journal 11, no. 4 (December 11, 2018): 2157–62. http://dx.doi.org/10.13005/bpj/1596.

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Endodontic therapy is essentially a debridement procedure that requires the removal of the irritants of the canal and periapical tissue if success is to be gained. The debridement may include instrumentation of the canal, placement of medicament and irrigants. Complete cleaning of the root-canal system requires the use of irrigants that dissolve organic and inorganic material. The study aimed to evaluate changes in dentin microhardness after canal irrigation with different solutions. Twenty four freshly extracted human mandibular molars (distal roots with single canals) were used. 10mm root length was taken as standard length. The roots were embedded into auto polymerizing acrylic resin using plastic molds before the canals preparation and micro hardness test. The distal roots were prepared with one shape rotary file. Before the preparation each root was irrigated with 1ml distilled water. Then the roots were divided into four groups according to the final irrigation protocol: Group A: NaOCl 2.5%, Group B: EDTA 17%, Group C: Citric Acid 40%, Group D: Distilled Water. For (Vicker microhardness test) the same load and time 500 g test load for 20 seconds, will be conducted three times at distance 0.5mm from canal lumen ; thus there will be 9 indentations on each specimen surface. An average of the three readings for each test condition will be recorded as the VHN value of a specimen. Comparing all four groups statistically there was no significant difference among them. The mean values were found more reduced in EDTA group followed by NaOCL group, and then Control and Citric Acid groups. All the groups showed reduction in dentin microhardness. EDTA group showed the maximum reduction followed by NaOCL group, and least with Citric Acid group.
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Abuhaimed, Tariq S., and Ensanya A. Abou Neel. "Sodium Hypochlorite Irrigation and Its Effect on Bond Strength to Dentin." BioMed Research International 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/1930360.

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Effective shaping and cleaning of root canals are essential for the success of endodontic treatment. Due to the complex anatomy of root canal spaces, the use of various instrumentation techniques alone is not effective in producing bacteria-free root canal spaces. Irrigation, disinfectants, rinses, and intervisit medications are used in conjunction with the mechanical instrumentation to ensure the success of endodontic treatment. Sodium hypochlorite (NaOCl), a halogenated compound, is routinely used to irrigate the root canal during endodontic treatments. NaOCl has been known for its antibacterial action, proteolytic and dissolution capacity, and debridement properties. NaOCl, however, can alter the composition of dentin and hence its interaction with the adhesive resins used to bond the restorative materials to treated dentin. This review therefore covers in depth the action of NaOCl on dentin-adhesive resin bond strength including both enhancement and reduction, then mechanisms proposed for such action, and finally how the adverse action of NaOCl on dentin can be reversed.
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Soares, Janir Alves, Maria Auxiliadora Roque de Carvalho, Suelleng Maria Cunha Santos Soares, Rodrigo Dantas Pereira, Manoel Brito-Júnior, Paula Prazeres Magalhães, Isabel Alessandra Miranda Nunes, et al. "Pattern of Disinfection of Root Canal Dentin by Alternated Acid-Base Irrigating Regimen." Scientific World Journal 2019 (January 1, 2019): 1–8. http://dx.doi.org/10.1155/2019/9219238.

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Objective. To quantifyEnterococcus faecalisdensity in root canal dentin after chemomechanical preparation (CMP) using alternated irrigating regimen.Methodology. Root canals (RC) were contaminated withE. faecalis(ATCC 19433) for 3 weeks and evident biofilms were obtained. After initial sampling (S1), the CMP was aided by irrigants: saline solution (control; n=12), a conventional regimen (CR) (group 1; n=12) using 5.25% NaOCl and a final rinse with 17% EDTA, and an alternating regimen (AR) of intercalated use of NaOCl and EDTA (group 2, n=12), followed by a second sampling (S2). After 2 weeks, S3 was obtained. Two roots were analyzed by scanning electron microscopy. Each root was divided into cervical, mild, and apical segments and sampling of the superficial (n=90) and deep (n=90) dentin layers was obtained using Gates-Glidden burs. TheE. faecalisdensity (CFU/mg) in log10was categorized as residual (0 > 0.2), moderate (0.2 ≥ 0.5), or elevated (> 0.5). The prevalence of positive samples in BHI and BHI-A was analyzed by Pearson’s chi-square test. The data were normalized by a log10transformation of CFU and were analyzed by one-way ANOVA and Tukey’s tests.Results. Biofilms were observed only in the control root canal walls. Topographically, the controls and CR showed similar distributions ofE. faecalisin the dentin. Microbiologically positive root canals harbored muchE. faecalisin the adjacent dentin (p< 0.05). Irrigating saline provided moderate density ofE. faecalisin the dentin while CR and AR resulted in a residual density of microorganisms (p< 0.05).Conclusions. TheEnterococcus faecalisdensity in dentin was influenced by the irrigating regimen and the microbiological status of the root canal. The CMP aided by the alternating regimen interfered with the recolonization of the root canal and topographic distribution ofEnterococcusin root dentin.
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Putri, Asri Riany. "CROWN DOWN PREPARATION TECHNIQUE WITH LARGE TAPER ENDODONTIC HAND INSTRUMENT." Interdental Jurnal Kedokteran Gigi (IJKG) 17, no. 1 (June 22, 2021): 41–48. http://dx.doi.org/10.46862/interdental.v17i1.2075.

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Introduction: Root canal preparation is an important step in root canal treatment. The use of stainless steel K-Files is time-consuming and causes fatigue to patients and operators. The large taper endodontic hand instrument can be used as an option for another preparation instrument. The purpose of this article is to determine the advantages of using large taper endodontic hand instruments as a preparation instrument compared to conventional stainless steel K-Files. Case: The 24-year-old male patient presented with pain in his lower left tooth even though it was not used. Examination of teeth 35, percussion and press (+), palpation (-), CE (-), exploration of root canals with smooth broach (+). There was a radiolucent image in the distal crown that had reached the pulp chamber, radiolucency with a blurred border of 2 mm in diameter at the periapical area, and the dilation of the periodontal ligaments along with the roots. Tooth 35 diagnosis was partial pulp necrosis with periapical lesions. Case Management: Root canal treatment of teeth 35 using hand-used ProTaper with the crown down technique up to F4 WL = 21 mm. Obturation with single cone technique with Endomethasone as a sealer. Discussion: The large taper instrument is very flexible and easily enters narrow and bent root canals, thus it can shorten the working time, reduce the risk of fatigue for patients and operators, improves the cleaning of the root canal system, and consistent root canal formation. The crown down technique used can reduce the risk of preparation errors, prevent debris extrusion and improve obturation quality. Conclusion: Root canal preparation using a large taper endodontic hand instrument can shorten the working time and reduce the risk of fatigue for patients and operators compared to preparations using conventional stainless steel K-File.
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Dissertations / Theses on the topic "Root dentin canlal"

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Melo, Renata Marques de [UNESP]. "Influência de sistemas adesivos e da região do dente na durabilidade da união entre dentina e pino de fibra." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/105547.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Esse estudo avaliou a performance de dois adesivos com condicionamento ácido prévio (All- Bond 2 e One-step Plus - Bisco) e dois sistemas adesivos autocondicionantes (Clearfil SE Bond- Kuraray e Xeno III- Dentsply) quanto à resistência de união à dentina coronária e do canal radicular, penetração do adesivo na dentina desmineralizada e influência sobre o grau de conversão do cimento resinoso. Também foi determinada, com mecânica da fratura, a tenacidade da interface pino/cimento/dentina formada com o adesivo All-Bond 2. O canal radicular de 80 dentes humanos anteriores superiores foi instrumentado e, em seguida, preparado com brocas do sistema de pinos FRC Postec (Ivoclar). A dentina foi tratada com um dos sistemas adesivos e o pino foi cimentado com cimento Duo-link (Bisco). Oito grupos foram formados de acordo com o sistema adesivo e o tempo de armazenagem em saliva artificial (7 d ou 4 m). Seis secções transversais (~1,0 mm) foram obtidas das regiões compreendidas entre 4 mm acima da JEC até 4mm do ápice radicular, isto é, dentina coronária e do canal radicular. Três destas seis secções foram submetidas ao teste de pushout em máquina de ensaio universal Instron (1 mm/min, 50 Kgf). Nas secções restantes foram avaliados o grau de conversão do cimento e a penetração do adesivo na dentina com μ-Espectroscopia Raman. As amostras de tenacidade consistiram de dois hemi-discos de resina reforçada por fibra (pino) cimentados a duas fatias de dentina da câmara pulpar, formando um sanduíche (espécime Brazil nut). Os resultados do teste Anova 3-fatores de medida repetida (p<0.05) indicam que, apenas, a “região” exerceu efeito significante sobre a resistência de união (MPa). Na porção coronária (4,20 MPa) a resistência foi maior que nas regiões média (3,45 MPa) e apical (3,26 MPa) (Tukey, 5%). A tenacidade de fratura da interface cimento-dentina foi maior...
This study evaluated the performance of two etch-and-rinse (All-Bond 2 andOne-step Plus- Bisco) and two self-etch adhesive systems (Clearfil SE Bond- Kuraray and XenoIII-Dentsply) concerning their bonding durability to coronal and root canal dentin, infiltration onto dentin and influence on the degree of cure of a dual-cure cement. It was also determined the interfacial fracture toughness of the post/cement/dentin interface forme with All-Bond 2. The root canals of 80 human incisors and canines were instrumented and prepared with burs (FRC Postec System, Ivoclar). Dentin was treated with one of the four adhesives and FRC Postec posts (Ivoclar) were cemented to the root canal with Duo-link dual-cure resin cement (Bisco). Eight groups were formed according to the adhesive system employed and the aging time in water (7 or 4 m). Six transverse sections (~1.0 mm) were cut from 4 mm above the CEJ up to 4 mm short of the root canal apex, comprising coronal and root canal dentin. Three out of the six sections were submitted to push-out testing in an Instron machine (1 mm/min, 50 Kgf). The degree of conversion of the cement and the infiltration of the adhesive were evaluated in the remaining sections through Raman μ-Spectroscopy. The fracture toughness specimens were made out of two half disks of fiber–reinforced composite (post) cemented to dentin pieces, forming the Brazil nut specimen. The analisys obtained with the 3-way Anova of repeated measures test (p<0.05) showed that only the “region” had statistically significant effects on the bond strengths (MPa). Comparison of the means achieved in each region (Tukey, p < 0.05) revealed that the coronal portion (4.20 MPa) was higher than the cervical (3.45 MPa) and middle portions (3.26 MPa) of the root, which were not statistically different. The interfacial fracture toughness was higher for the cement-dentin interface than... (Complete abstract click electronic access below)
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Melo, Renata Marques de. "Influência de sistemas adesivos e da região do dente na durabilidade da união entre dentina e pino de fibra /." São José dos Campos : [s.n.], 2009. http://hdl.handle.net/11449/105547.

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Orientador: Marco Antonio Bottino
Banca: Luiz Felipe Valandro
Banca: Marcelo Giannini
Banca: Marcela Rocha de Oliveira Carrilho
Banca: Maximiliano Piero Neisser
Resumo: Esse estudo avaliou a performance de dois adesivos com condicionamento ácido prévio (All- Bond 2 e One-step Plus - Bisco) e dois sistemas adesivos autocondicionantes (Clearfil SE Bond- Kuraray e Xeno III- Dentsply) quanto à resistência de união à dentina coronária e do canal radicular, penetração do adesivo na dentina desmineralizada e influência sobre o grau de conversão do cimento resinoso. Também foi determinada, com mecânica da fratura, a tenacidade da interface pino/cimento/dentina formada com o adesivo All-Bond 2. O canal radicular de 80 dentes humanos anteriores superiores foi instrumentado e, em seguida, preparado com brocas do sistema de pinos FRC Postec (Ivoclar). A dentina foi tratada com um dos sistemas adesivos e o pino foi cimentado com cimento Duo-link (Bisco). Oito grupos foram formados de acordo com o sistema adesivo e o tempo de armazenagem em saliva artificial (7 d ou 4 m). Seis secções transversais (~1,0 mm) foram obtidas das regiões compreendidas entre 4 mm acima da JEC até 4mm do ápice radicular, isto é, dentina coronária e do canal radicular. Três destas seis secções foram submetidas ao teste de pushout em máquina de ensaio universal Instron (1 mm/min, 50 Kgf). Nas secções restantes foram avaliados o grau de conversão do cimento e a penetração do adesivo na dentina com μ-Espectroscopia Raman. As amostras de tenacidade consistiram de dois hemi-discos de resina reforçada por fibra (pino) cimentados a duas fatias de dentina da câmara pulpar, formando um sanduíche (espécime Brazil nut). Os resultados do teste Anova 3-fatores de medida repetida (p<0.05) indicam que, apenas, a "região" exerceu efeito significante sobre a resistência de união (MPa). Na porção coronária (4,20 MPa) a resistência foi maior que nas regiões média (3,45 MPa) e apical (3,26 MPa) (Tukey, 5%). A tenacidade de fratura da interface cimento-dentina foi maior... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: This study evaluated the performance of two etch-and-rinse (All-Bond 2 andOne-step Plus- Bisco) and two self-etch adhesive systems (Clearfil SE Bond- Kuraray and XenoIII-Dentsply) concerning their bonding durability to coronal and root canal dentin, infiltration onto dentin and influence on the degree of cure of a dual-cure cement. It was also determined the interfacial fracture toughness of the post/cement/dentin interface forme with All-Bond 2. The root canals of 80 human incisors and canines were instrumented and prepared with burs (FRC Postec System, Ivoclar). Dentin was treated with one of the four adhesives and FRC Postec posts (Ivoclar) were cemented to the root canal with Duo-link dual-cure resin cement (Bisco). Eight groups were formed according to the adhesive system employed and the aging time in water (7 or 4 m). Six transverse sections (~1.0 mm) were cut from 4 mm above the CEJ up to 4 mm short of the root canal apex, comprising coronal and root canal dentin. Three out of the six sections were submitted to push-out testing in an Instron machine (1 mm/min, 50 Kgf). The degree of conversion of the cement and the infiltration of the adhesive were evaluated in the remaining sections through Raman μ-Spectroscopy. The fracture toughness specimens were made out of two half disks of fiber-reinforced composite (post) cemented to dentin pieces, forming the Brazil nut specimen. The analisys obtained with the 3-way Anova of repeated measures test (p<0.05) showed that only the "region" had statistically significant effects on the bond strengths (MPa). Comparison of the means achieved in each region (Tukey, p < 0.05) revealed that the coronal portion (4.20 MPa) was higher than the cervical (3.45 MPa) and middle portions (3.26 MPa) of the root, which were not statistically different. The interfacial fracture toughness was higher for the cement-dentin interface than... (Complete abstract click electronic access below)
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Khan, Ali Akbar. "Bacterial penetration into root canal dentine." Thesis, Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/HKUTO/record/B39556918.

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Raman, Jaya. "Microleakage of dentine-bonded root canal fillings." Thesis, Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/HKUTO/record/B39558253.

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Pantoja, Carlos Augusto de Morais Souto 1982. "Influência do etanol na rugosidade, na energia livre de superfície da dentina radicular e no preenchimento de túbulos dentinários = Influence of ethanol on the surface roughness, the surface free energy of the root dentin and filling tubules with AH Plus sealer." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/289334.

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Orientadores: José Flávio Affonso de Almeida, Caio Cezar Randi Ferraz
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
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Resumo: Este trabalho foi dividido em 2 capítulos, sendo que no capítulo 1 o objetivo foi de avaliar a influência do etanol na rugosidade, na energia livre de superfície da dentina radicular e na interação entre o cimento AH Plus e a superfície dentinária. Foram selecionadas 100 raízes de dentes humanos anteriores superiores e padronizadas com comprimento de 18 mm. As raízes foram cortadas longitudinalmente, obtendo-se 200 amostras dentinárias, divididas aleatoriamente em 4 grupos (n = 50), de acordo com os métodos de secagem: (1) úmido: apenas aplicação de ponta aspiradora, (2) pontas de papel absorvente: ponta aspiradora + pontas de papel absorventes, (3) solução de etanol 70%: etanol 70% (1 minuto) + ponta aspiradora + pontas de papel absorvente, (4) solução de etanol 100%: etanol 100% (1 minuto) + ponta aspiradora + pontas de papel absorvente. As amostras dentinárias foram avaliadas com o auxílio do rugosímetro e goniômetro, dentro dos seguintes parâmetros de avaliação: (1) rugosidade superficial; (2) energia livre de superfície e (3) ângulo de contato formado entre o cimento AH Plus e superfície dentinária. No capítulo 2, o objetivo foi avaliar a influência do etanol no preenchimento dos túbulos dentinários. Foram selecionadas 40 raízes de dentes humanos anteriores superiores, com comprimento radicular padronizado em 18 mm, e divididas aleatoriamente nos mesmos 4 grupos descritos anteriormente. Após a instrumentação, as raízes foram obturadas pela técnica de Schilder, com guta-percha e cimento AH Plus misturado com o marcador fluorescente Rodamina B. Para a visualização em microscopia confocal de varredura a laser foram confeccionadas 4 secções transversais (1 mm de espessura), em cada terço radicular. Foram avaliados os seguintes parâmetros: (1) porcentagem do perímetro da parede do canal coberta com cimento; (2) máxima profundidade de penetração do cimento endodôntico no interior dos túbulos dentinários; (3) porcentagem da área da dentina penetrada pelo cimento e (4) valor da intensidade do marcador fluorescente Rodamina B. Os resultados encontrados foram analisados estatisticamente pelos testes ANOVA / Tukey, com nível de significância de 5%, em ambos os capítulos. No capítulo 1 observou-se que nos grupos em que se utilizou o etanol, quando comparados aos demais, foram encontrados menor rugosidade de superfície da dentina, maior energia livre de superfície e menor ângulo de contato formado entre o cimento AH Plus e a superfície dentinária. Já no capítulo 2, não foi verificada diferença significante entre os grupos, quanto à avaliação da porcentagem do perímetro da parede do canal coberta por cimento. Entretanto, maiores valores de profundidade de penetração e da porcentagem da área da dentina penetrada pelo cimento foram encontrados no Grupo etanol 100%, seguidos pelos Grupos etanol 70%, pontas de papel e úmido. O etanol 100% atingiu resultados significativamente maiores que a concentração 70%, exceto para a intensidade da Rodamina B no terço cervical. Além disso, os resultados do Grupo pontas de papel foram melhores que o Grupo úmido, com exceção da intensidade da Rodamina B no terço apical. Diante da análise dos resultados apresentados nos 2 capítulos, verificou-se que o etanol (70% e 100%) proporcionou melhor molhabilidade do cimento AH Plus na superfície dentinária. Da mesma forma, as soluções de etanol, especialmente na concentração de 100%, favoreceram a penetração do cimento endodôntico no interior dos túbulos dentinários
Abstract: This study was divided into 2 chapters. In chapter 1, the aim was to evaluate the influence of ethanol on dentin roughness, dentin surface free energy and interaction between dentin surface. A hundred roots of human maxillary teeth were selected with length standardized in 18 mm. The roots were split longitudinally yielding 200 dentin samples, which were divided randomly into 4 groups according to the drying method used: (1) wet: vaccum only (2) paper points: vaccum + absorbent paper points, (3) 70% alcohol: 70% alcohol (1min) + vaccum + absorbent paper points and (4) 100% alcohol group: 100% alcohol (1min) + vaccum + absorbent paper points. The specimens were measured with aid of goniometer and rugosimeter within the following evaluation parameters: (1) surface roughness, (2) surface free energy and (3) contact angle formed between AH Plus sealer and dentin surface. In Chapter 2, the aim was to evaluate the influence of ethanol on dentinal tubules filling. Forty roots of human maxillary teeth with length standardized in 18 mm were selected. The roots were randomly divided among the same 4 groups described above. After instrumentation, the roots were filled by Schilder's technique with gutta-percha and AH Plus mixed with rhodamine B fluorescent marker. The roots were cross-sectioned and dentin sections (1 mm thick) were analyzed by confocal laser scanning microscopy. The evaluation parameters were: (1) Percentage of root canal wall coverage, (2) maximum depth of sealer penetration into dentinal tubules, (3) percentage of penetrated area and (4) fluorescent rhodamine B intensity. The results were statistically analyzed by ANOVA and Tukey tests (?=5%). In Chapter 1 the groups in which ethanol was used lower dentin surface roughness, higher surface free energy and lower contact angle formed between AH Plus and dentin surface were found when compared to the control groups. In chapter 2, there was no significant difference between the groups regarding the percentage of root canal wall coverage. Higher values of maximum depth of sealer penetration into dentinal tubules and percentage of penetrated area were found in Group 100% ethanol, followed by 70% ethanol, paper points and wet groups. The results achieved by 100% ethanol were significantly higher than 70% ethanol, except for intensity of rhodamine B in cervical third. Furthermore, the paper points results were better than wet group, except for intensity of rhodamine B in apical third. After analyzing the results presented in the two chapters, it was verified that ethanol solutions (70% and 100%) provide better wettability of AH Plus sealer on dentin surface. Similarly, ethanol solutions, especially at 100% concentration, improve the penetration of the sealer into dentinal tubules
Doutorado
Endodontia
Doutor em Clínica Odontológica
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Gibby, Stuart Grant Walker Mary P. "Effect of residual moisture on the quality of resin/dentin interface for an epoxy-resin endodontic sealer." Diss., UMK access, 2008.

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Thesis (M.S.)--School of Dentistry. University of Missouri--Kansas City, 2008.
"A thesis in oral biology." Advisor: Mary P. Walker. Typescript. Vita. Title from "catalog record" of the print edition Description based on contents viewed Aug. 07, 2009. Includes bibliographical references (leaves 39-45). Online version of the print edition.
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Ahmed, Suwayda. "Evaluation of dentine damage after rotary NiTi preparation." University of the Western Cape, 2016. http://hdl.handle.net/11394/5602.

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Magister Scientiae Dentium - MSc(Dent)
NiTi rotary instruments have shape memory and are highly flexible and super-elastic. These properties of the metal alloy allows for ease of root canal preparation to ultimately result in a root canal preparation that has a continuous taper, while canal shape and curvature is maintained. It must be noted that the NiTi rotary instrumentation may have an effect on root canal dentine, which may manifest as dentine damage. Different NiTi rotary systems on the market vary with regards to their design features and kinematics, which may influence dentine damage. The purpose of this in-vitro study was to compare the effect of four different NiTi rotary systems, as well as stainless steel files on root canal dentine. One hundred and eighty permanent human mandibular molar mesial roots were used for the study. The total samples were randomly divided into six groups, where one group (n=30) was left unprepared to serve as the control group. The remaining five groups were randomly assigned to a nickel-titanium rotary instrumentation system and one stainless steel hand file group. Group 1: Control group; Group 2: Stainless steel files group; Group 3: Wave One (Dentsply Maillefer) rotary group; Group 4: ProTaper NEXT (Dentsply Maillefer) rotary group; Group 5: iRaCe (FKG Dentaire) rotary group; Group 6: BT-Race (FKG Dentaire) rotary group.The root canal preparations were carried out according to the manufacturers' recommendations, after decoronation of the tooth crowns. Sodium hypochlorite (5,25%) and 17% EDTA was used as a root canal irrigant and a chelating agent during canal preparation. Each root segment was sectioned at 3mm, 6mm and 9mm from the apex. The root segments were observed under a stereomicroscope at 12x magnification and digital camera at 40 x magnification for the appearance of dentine damage. The images were observed by the author and an impartial second observer. Root segments were observed for the appearance of dentine damage (microcracks, craze lines or fractures), and samples were described as having 'dentine defect' or 'no dentine defect'. Data for the different groups were collected and results were calculated and the total incidence of dentine damage was as follows: Control group = 0% Stainless steel hand files group = 0% Wave One group = 56, 67% ProTaper NEXT group = 60% iRaCe group = 60% BT-Race group = 56, 67% There are no significant differences between the groups: WaveOne, ProTaper NEXT, iRACE and BT-Race. However, there is a significant difference between the four groups and the stainless steel group (p<0.0001).
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Tse, Chung-ming, and 謝忠明. "A study of conventional root canal therapy performed by dental students." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1990. http://hub.hku.hk/bib/B31953931.

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Hughart, Donald Wayne. "Comparison of the sealing ability of two different types of root canal obturation cold lateral compaction and the continuous wave compaction technique /." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3348.

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Thesis (M.S.)--West Virginia University, 2004.
Title from document title page. Document formatted into pages; contains xi, 56 p. : ill. Vita. Includes abstract. Includes bibliographical references (p. 41-44).
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Barbizam, João Vicente Baroni [UNESP]. "Comparação in vitro da adesão de diferentes cimentos endodônticos à dentina radicular e aos componentes sólidos da obturação." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/101644.

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O objetivo desse estudo é avaliar in vitro, por meio dos testes de push-out e tração, a adesão de diferentes cimentos endodônticos à dentina e aos componentes sólidos da obturação, guta-percha e resilon. Sessenta dentes humanos uniradiculares tiveram suas coroas removidas e foram divididos em três gupos de vinte dentes. Cada grupo foi instrumentado pela técnica rotatória até uma lima tipo Profile 40.04 e alargados com uma broca de preparo de pino com 1,5 mm de diâmetro, sob irrigação com hipoclorito de sódio 2,5% (NaOCl) seguido de irrigação final com EDTA 17%; gel de clorexidina 2%(CHX) alternado com soro fisiológico e seguido por EDTA 17% ou apenas com soro fisiológico, como controle. A seguir, foram obturados com os cimentos AH 26, Endo Fill, Endo Rez e Epiphany. Após 48 horas de incubação a 37 graus Celsius e 100% de umidade, os dentes foram cortados tranversalmente em discos de 2 mm de espessura. As amostras foram submetidas à força de compressão pelo teste de push-out. Para o teste de tração, discos de guta-percha e resilon foram criados e os cimentos AH 26, Endo Fill, Endo Rez e Epiphany foram colocados em contato com o material sólido da obturação por meio de anéis metálicos contendo os cimentos em seu interor. Após incubação as amostras foram submetidas ao teste de tração. Ambos os testes foram realizados em máquina de ensaios (1mm/min) e os resultados expressos em Mpa. O teste Anova e Newman-Keuls evidenciaram que cimento Epiphany apresentou maior adesão à dentina no teste de push-out, seguido pelos cimentos Endo Rez e AH 26 que foram semelhantes entre si e, por último o cimento Endo Fill. O uso da CHX aumentou a adesão à dentina de todos os cimentos testados. No teste de tração aos componentes sólidos, o cimento AH 26 mostrou ter uma maior adesão que os demais cimentos, que foram semelhantes entre si.
The aim of this in vitro study was to evaluate the bond strength of different root canal sealers to dentin and to the filling core material, using push-out and tensile tests. Sixty extracted single-rooted human teeth were divided into three groups and evenly instrumented with the crown-down technique up to a file #55 followed by a root canal enlargement using a 1,5 mm diameter post drill. Teeth were prepared under irrigation with 2.5% NaOCl + EDTA 17 %, 2% CHX associated to a saline solution + EDTA 17% or just saline solution, as control. All teeth were completely filled with AH 26, Endo Rez, Endo Fill and Epiphany sealers. After 48 hours of storage in 100% humidity at 37°C, all samples were sectioned transversally into 2mm thickness disks and the push-out tests were performed. For the tensile tests, gutta-percha and resilon disks were created and metallic rings with the sealers were positioned over the core material disks, in the same time/temperature conditions. Both push-out and tensile tests were performed using the universal testing machine (1 mm/min) and the maximum load at failure expressed in MPa. Two-way ANOVA and Newman-Keuls tests showed that Ephipany sealant presented the highest bond strength to dentin followed by Endo REZ and AH 26 that were similar to each other and Endo Fill with the lowest values of bonding to dentin. 2% CHX irrigation increased the bonding strength of all sealers to dentin. Tensile tests to the filling core materials showed that AH 26 presented the highest values of bonding. No statistical differences were found between the other sealers.
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Books on the topic "Root dentin canlal"

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Huggins, Hal A. Root canals: Savior or suicide? Colorado Springs, CO: H.A. Huggins, 1995.

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Huggins, Hal A. Root canals: Savior or suicide? Colorado Springs: The Authro, 1999.

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Arens, Donald E. Practical lessons in endodontic surgery. Chicago: Quintessence Pub. Co., 1998.

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Problems in endodontics: Etiology, diagnosis, and treatment. London: Quintessence, 2009.

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author, Levy Thomas E., ed. The toxic tooth: How a root canal could be making you sick. Henderson, NV: MedFox Publishing, 2014.

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Gutmann, James L. Problem solving in endodontics: Prevention, identification, and management. 5th ed. Maryland Heights, Mo: Elsevier/Mosby, 2011.

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Basrani, Bettina. Endodontic radiology. 2nd ed. Ames, Iowa: John Wiley & Sons, Ltd., 2012.

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John, Nusstein, and Drum Melissa, eds. Successful local anesthesia for restorative dentistry and endodontics. Hanover Park, IL: Quintessence Pub. Co., 2011.

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Lumley, Philip. Practical clinical endodontics. Edinburg: Elsevier/Churchill Livingstone, 2006.

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E, Walton Richard. Endodontics: Principles and practice. 4th ed. St. Louis, Mo: Saunders/Elsevier, 2009.

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Book chapters on the topic "Root dentin canlal"

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Reis, Alessandra, Alessandro Dourado Loguercio, Kerstin Bitter, and Jorge Perdigão. "Adhesion to Root Dentin: A Challenging Task." In Restoration of Root Canal-Treated Teeth, 137–51. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-15401-5_7.

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Tjäderhane, Leo. "Dentin Basic Structure, Composition, and Function." In The Root Canal Anatomy in Permanent Dentition, 17–27. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73444-6_2.

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Loguercio, Alessandro Dourado, César Augusto Arrais, and Alessandra Reis. "Methods for Increasing the Longevity of Adhesion to Root Canal Dentin." In Restoration of Root Canal-Treated Teeth, 153–80. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-15401-5_8.

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Tanner, Johanna, and Anna-Maria Le Bell-Rönnlöf. "Fiber-Reinforced Dental Materials in the Restoration of Root-Canal Treated Teeth." In Restoration of Root Canal-Treated Teeth, 67–86. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-15401-5_4.

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Bóveda, Carlos, and Anil Kishen. "The Role of Modern Technologies for Dentin Preservation in Root Canal Treatment." In Minimally Invasive Approaches in Endodontic Practice, 1–32. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45866-9_1.

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Dumont, Maxime, Juan Carlos Prieto, Serge Brosset, Lucia Cevidanes, Jonas Bianchi, Antonio Ruellas, Marcela Gurgel, et al. "Patient Specific Classification of Dental Root Canal and Crown Shape." In Shape in Medical Imaging, 145–53. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-61056-2_12.

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Szilágyi, László, Csaba Dobó-Nagy, and Balázs Benyó. "Identification of the Root Canal from Dental Micro-CT Records." In Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 339–46. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-25085-9_40.

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Petryniak, Rafał, Zbisław Tabor, Anna Kierklo, and Małgorzata Jaworska. "Detection of Voids of Dental Root Canal Obturation Using Micro-CT." In Computer Vision and Graphics, 549–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33564-8_66.

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Ghorpade, Ratnakar, Kalyana Sundaram, and Vivek Hegde. "Root Canal Filling Process Enhancement in Simulated Dental Blocks Using a Novel Device." In Techno-Societal 2016, 667–77. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53556-2_69.

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"Restorative dentistry 4: endodontics." In Oxford Handbook of Clinical Dentistry, edited by Bethany Rushworth and Anastasios Kanatas, 333–59. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198832171.003.0008.

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Endodontics is the study of the prevention and management of problems affecting the dentine, pulp, and periapical tissues. This chapter is a concise guide to the rationale behind root canal treatment, the instruments and materials available, and the modern techniques used. The chapter considers the anatomy of the root canal system including the average working lengths of pulp canals, the prevalence of lateral and accessory canals, and the location of the apical foramina. Alongside discussion of the indications and contraindications for root canal treatment, the aims and objectives of canal shaping, cleaning, and obturation are outlined. Detailed, step-by-step guidance is given for the root canal treatment procedure and common errors in canal preparation are highlighted. Management options are presented for some endodontic problems such as an acute periapical abscess and long-term possibilities for a definitive restoration are offered.
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Conference papers on the topic "Root dentin canlal"

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Dong, Janet, Shane Y. Hong, and Gunnar Hasselgren. "Non Destructive Diagnosis for Minimum Invasive Access Preparation in Endodontic Treatment." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33484.

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Root canal treatment of infected root canals represents a large percentage of business in general dental practice. It is an expensive process and often prone to failure. During root canal treatment, destructive access preparation by removing parts of tooth crown and dentin is usually needed even before a clinician’s inspection and diagnosis. This paper presents a non-destructive method for accessing the internal tooth geometry by building a 3-D tooth model from 2-D radiograph. The geometry of root canals is then formulated into a mathematical model. Based on this mathematical model, the treatment procedures utilizing the dental tools/instruments are planned by a computer aided prescription system, which yields the tool selection and tool path for the root canal preparation by an intelligent micro drilling machine with on-line monitoring. To minimize the removal of healthy tooth crown and dentin, thus protecting the strength of the patient’s infected tooth, an optimization algorithm is utilized for planning the access preparation in the root canal treatment. Although an opening of a tooth crown is still needed so that dental instruments can reach the root canal, the non-destructive 3-D modeling and the optimization of the access preparation in the new approach makes the root canal treatment minimally invasive compared to present techniques.
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Zhu, L., M. Salloum, S. Feteih, J. Hough, D. Arola, and M. Tolba. "Experimental Study of Temperature Elevations in Extracted Teeth Using a System B Heating Catheter for Bacterial Disinfection." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19125.

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Total bacterial disinfection and elimination from the human root canal system are crucial in clinical endodontic procedures [Card et al., 2002; Kakoli et al., 2009]. The current approaches relying on mechanical instrumentation and root canal irrigation and medicaments have demonstrated that eradication of bacteria occurs when the bacteria are in direct contact with the medicaments. However, persistent infection following routine treatments has suggested that bacteria may harbor in the root canal anatomical irregularities and/or deep dentinal tubules, therefore, surface irrigation of medicaments may not be able to reach those regions. Heat treatment has been used for obturation of the root canal in endodontic practice. In this study we hypothesize that as an alternative, surface heating using a System B heating catheter through the root canal surface would be effective for bacterial elimination in the deep dentin. The heat-induced cytotoxic response kills bacteria in the root dentin via heat conduction from the thermal energy incident on the root canal wall. In principle, a high power setting and/or a long heating duration can always achieve sufficient temperature elevations in deep dentin. Yet, the detailed temperature distribution inside the dentin and possible thermal damage to the supporting periodontium are unknown. Therefore, it is of clinical importance to perform and investigate temperature elevations in dentin to provide clinicians with an optimized and effective treatment protocol to minimize unnecessary thermal damage to the surrounding structure.
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Gill, Jennifer, Maher Salloum, and Liang Zhu. "Improvement of Root Canal Disinfection Protocol Using Er;Cr:YSGG Laser: Theoretical Study of Temperature Distribution in Human Dentin." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19149.

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There has been a great deal of interest regarding the use of Er;Cr;YSGG laser heating to disinfect human root canal, prior to a root canal procedure. Current disinfection procedures rely on irrigant solutions, such as sodium hypochlorite, which are applied to the canal prior to filling. However, prior experimentation has shown that bacteria are capable of penetrating into the dentin tubules as far as 800 μm, measured laterally from the root canal surface [Haapasalo and Orstavik 1987; Kakoli et al., 2009]. Further studies have proven that irrigants are incapable of destroying bacteria within deep dentin tubules, despite their ability to kill approximately 98% of the bacteria within the canal.
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Nica, Luminita, Carmen Todea, Gabriel Furtos, and Bogdan Baldea. "How to bond to root canal dentin." In Fifth International Conference on Lasers in Medicine, edited by Carmen Todea, Adrian G. Podoleanu, and Virgil-Florin Duma. SPIE, 2014. http://dx.doi.org/10.1117/12.2044119.

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Tani, Giovanni, Leonardo Orazi, and Gabriele Cuccolini. "An Automated Procedure for the Geometrical Characterization of Root Canals." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59337.

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In this work an original system for the geometrical characterization of root canals for dental implants was developed and tested. The aim of this work is to determine the shape and the size of the posts that best fit a statistical population of root canals with a defined maximum amount of removed tissue. The task is performed by an accurate acquisition of the shape of a statistically significant batches of root impressions: the geometry are then processed to obtain the post geometry. The acquisition is carried out using a conoscopic laser scanning device mounted on a 4 axis controlled CNC measurement system. The shape of the root canals were measured for each type of tooth, obtaining an average 3-D computer design of the canal profiles. Several comparisons between the acquired geometry and the representative forms of commercial posts are finally presented.
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Zhu, Liang, Mostafa Tolba, Dwayne Arola, Maher Salloum, and Fernando Meza. "Evaluation of Effectiveness of Er,Cr:YSGG Laser for Root Canal Disinfection: Theoretical Simulation of Temperature Elevations in Root Dentin." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-204616.

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Lasers have been used in dentistry for removing hard tooth tissue for more than twenty years. Erbium, chromium: yttrium, scandium, gallium, garnet (Er, Cr: YSGG) lasers are currently being investigated for disinfecting the root canal system, since bacteria can spread from the root canal surface to the deep dentin via the dentin tubules [1]. It is expected that temperature elevation in the deep dentin is sufficient to eradicate bacteria there. Prior to using laser therapy, it is important to understand the temperature distribution and to assess thermal damage to the surrounding tissue. In this study, we develop a heat transfer model to estimate the temperature elevations in both the tooth root and surrounding tissue during Er,Cr:YSGG laser disinfection of the root canal surface. The laser power level, pulse setting, as well as laser duration are incorporated into the Pennes bioheat equation for the theoretical study. We propose a treatment protocol that achieves better heat penetration with shorter treatment time than the existing protocols used in dentistry [2].
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Motie Shirazi, Mohsen, Omid Abouali, Homayoon Emdad, Mohammad Reza Nabavizade, Hossein Mirhadi, and Goodarz Ahmadi. "Numerical Investigation of Irrigant Penetration Into Dentinal Microtubules." In ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icnmm2014-21743.

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Root canal irrigation is an important procedure in endodontic treatment. After mechanical preparation of root canal, NaOCl, which is the most common antibacterial irrigant, is inserted by special needles. This work helps to remove bacteria and debris and dissolves the organic tissues in the root canal. In the vicinity of the main root canal, there are a large number of microchannels attached to its wall named “dentinal tubules”. The success of irragation depends on the penetration of irrigant in these tubules, which results in killing the bacteria and preventing complexities after root canal therapy. There is rather limited earlier research on modeling of dentinal tubules. Nevertheless, it has been shown that the flow rate, insertion depth and needle types affect the flow pattern in the root canal. The concentration difference between inserted irrigant and the liquid filling the tubules is the main driving force for penetration. Diffusion of irrigant, however, is a time dependent process and should be analyzed as an unsteady problem. In prior studies, the geometry was considered as cylinders with a constant diameter of 2.5μm and the effect of tapering was neglected. In reality the diameter varies from about 2.5μm near the pulp to about 1.5μm at the distance of 1 mm from the pulp. In the present study, a more detailed and exact model of dentinal tubules geometry was considered. The computational fluid dynamics (CFD) is used for the modeling of flow and diffusion of irrigant as a function of time. The unsteady and 3D continuity and Navier-Stokes equations as well as a scalar transport equation are solved and the flow field and the concentration of antibacterial irrigant were evaluated. The simulation results were compared to the earlier works. It was shown that the use of the correct detailed geometry of tubules led to noticeable differences compared to those found for the idealized model.
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8

Padole, Pramod, Rashmi Uddanwadiker, and Harshwardhan Arya. "Linear Finite Element Analysis of a 3-Dimensional Tooth and Its Prototype Model." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95225.

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Dentist, follow root canal therapy to treat teeth with pulpal involvement due to dental caries or as a result of trauma. In order to restore fractured and broken down teeth internal reinforcement is required in the form of a post-core restoration. The post extends into the root canal space and provides retention for the core, which subsequently helps to provide a foundation for the crown restoration. For the treatment procedure, post, core and crown are casted by an indirect procedure by taking the measurements from patient’s tooth in the form of impressions. These impressions are then converted into solid gypsum casts and then wax patterns are developed in order to facilitate casting by the lost wax technique. The final shape of the core and crown and success of the treatment entirely depends upon the skill of the dental technician and involves a number of variables in impressioning, cast poring and wax pattern fabrication. The treatment can be further simplified by making a prototype model of the post, core and the crown by taking the dimensions from the patient’s tooth. This paper presents four prototype models prepared from the solid model of the original tooth and three restored tooth.
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9

Kusumo, Adi Nugroho Hendro, Diatri Nari Ratih, and Ema Mulyawati. "Root Canal Treatment of Mandibular Molar With Accessory Root Canal: A Case Report." In 1st Aceh International Dental Meeting (AIDEM 2019), Oral Health International Conference On Art, Nature And Material Science Development 2019. Paris, France: Atlantis Press, 2021. http://dx.doi.org/10.2991/ahsr.k.210201.001.

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10

Fujimoto, M., S. Yoshii, C. Kitamura, S. Ikezawa, and T. Ueda. "Development of dental endoscope for root-canal observation." In 2015 9th International Conference on Sensing Technology (ICST). IEEE, 2015. http://dx.doi.org/10.1109/icsenst.2015.7438451.

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