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1.
BMC Med Educ ; 19(1): 350, 2019 Sep 13.
Artigo em Inglês | MEDLINE | ID: mdl-31519180

RESUMO

BACKGROUND: Dental students are future dentists. Continuous assessment and improving of the educational curricula will ensure excellent academic performance of dental students and thus providing the community with the best treatment modalities. The aim of this study was to evaluate the root canal filling quality performed in extracted teeth by preclinical undergraduate Yemeni dental students. METHODS: Root canal treatment was performed by undergraduate preclinical dental students on 331 extracted human teeth including 741 roots. The teeth were then collected and evaluated radiographically based on three criteria of quality (length, density, and taper). Cohen's Kappa test was used to assess the agreement between the examiners and Chi-squared test was used for the association between the study variables. The level of significant was set at α < 0.05. RESULTS: The results of the study revealed that the overall quality of roots canals fillings was poor. However, more than half of the study sample (53.4%) had adequate length, 13.1% had adequate density, and 14.2% had adequate taper. Anterior as well as single-rooted teeth had significantly better quality than posterior and multi-rooted teeth, respectively. The root canal fillings quality mandibular teeth was better than of maxillary teeth with no significant difference (P > 0.05). CONCLUSION: The findings of the study emphasize the need of improving the endodontic course in the preclinical level and more advanced techniques and instruments should be incorporated.


Assuntos
Endodontia/educação , Materiais Restauradores do Canal Radicular/normas , Obturação do Canal Radicular/normas , Estudantes de Odontologia , Auditoria Clínica , Cavidade Pulpar/cirurgia , Educação em Odontologia , Humanos , Mandíbula/cirurgia , Maxila/cirurgia , Avaliação de Processos em Cuidados de Saúde , Propriedades de Superfície , Iêmen
2.
Microsc Res Tech ; 82(7): 1057-1064, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-30889319

RESUMO

The aim of this study was to evaluate three reciprocating systems and complementary cleaning methods on filling material removal during retreatment of flattened canals. Thirty-six mandibular incisors were prepared using rotary instruments up to size 25.08 and filled using the single-cone technique. Subsequently, the teeth were divided into three groups (n = 12) according to retreatment procedures: Reciproc Blue (RB): 25/0.08 and 40/0.06; ProDesign R (PDR): 25/0.06 and 35/0.05; and WaveOne Gold (WOG): 25/0.07 and 35/0.06. The remaining filling volume materials were assessed by means of micro-CT imaging before and after retreatment. After this, the specimens were subdivided into three groups according to complementary cleaning methods: XP-Endo Shaper (30/0.01); passive ultrasonic irrigation (PUI); 60° oscillatory instrumentation with #30 H-file, and micro-CT scan was taken. Then, the roots were cut in half and the samples were analyzed by scanning electron microscope (SEM). The data were analyzed statistically using Kruskal-Wallis and Dunn's Multiple Comparison test with significance level of 5%. None of the reciprocating files promoted complete removal of filling material and there was no statistical difference between the groups, regardless instrument size (p > 0.05). Complementary cleaning methods increased remnant filling removal (p < 0.05). XP-endo Shaper significantly reduced the amount of filling material in the apical and middle thirds, compared with H-files (p < 0.05), with no difference with PUI. In the SEM, there was no statistical difference among the instruments (p > 0.05). The reciprocating systems showed similar effectiveness in removing root filling material. Complementary cleaning method with the XP-Shaper enhanced filling material removal.


Assuntos
Cavidade Pulpar/efeitos dos fármacos , Materiais Restauradores do Canal Radicular/farmacologia , Obturação do Canal Radicular/normas , Preparo de Canal Radicular/métodos , Humanos , Microscopia Eletrônica de Varredura , Retratamento , Preparo de Canal Radicular/normas , Microtomografia por Raio-X
3.
J Indian Soc Pedod Prev Dent ; 37(1): 75-79, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30804311

RESUMO

Introduction: Pulpectomy has been a treatment of choice in all necrotic primary teeth. Advancing technology has brought the rotary system to reduce the manual dexterity and improve the quality of treatment for pulpectomy. Advancing technology in pediatric dentistry should be used for the better treatment protocol. Aim: The aim of this study is to compare the obturation quality and instrumentation time after root canal instrumentation with rotary Kedo-S files, hand K-files, and H-files in primary molars. Materials and Methods: A randomized control trial where pulpectomy was performed on 75 primary molars equally distributed for instrumentation with K-file, H-files rotary Kedo-S files, respectively. The instrumentation time and obturation quality were noted. Results: Kedo-S files showed the least instrumentation time with better obturation quality as compared to other two groups (P < 0.001). Conclusion: Pediatric rotary files Kedo-S has better obturation quality in minimum instrumentation time.


Assuntos
Obturação do Canal Radicular/instrumentação , Criança , Pré-Escolar , Método Duplo-Cego , Feminino , Humanos , Masculino , Dente Molar/cirurgia , Duração da Cirurgia , Obturação do Canal Radicular/métodos , Obturação do Canal Radicular/normas , Dente Decíduo/cirurgia
4.
J Endod ; 44(4): 639-642, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29395114

RESUMO

INTRODUCTION: The aim of this study was to measure the time consumed preparing retrograde cavities in root canals of maxillary molars filled using the GuttaCore (Dentsply Tulsa Dental Specialties, Tulsa, OK) technique and the cold lateral condensation technique (CLC) and to examine the quality of the root-end cavity preparation by ultrasonic tips using micro-computed tomographic (micro-CT) scanning. METHODS: A total of 24 maxillary molars were included; distobuccal and palatal canals were instrumented to size #40 and size #50, respectively. Teeth were randomly distributed into 2 experimental groups; half of the samples were filled with CLC, and half were filled with the GuttaCore technique. After 2 months, the apical 3 mm of each root apex was resected. A retrograde cavity was then prepared 3 mm deep into the root-end-filled canals using ultrasonic tips. The quality of the preparation was first confirmed by a surgical stereomicroscope, and the time required for the root-end preparation was recorded. After root-end cavity preparation, all samples were scanned by micro-CT scanning. RESULTS: There was no significant difference between the palatal and distobuccal canals in the time required to prepare a retrograde cavity. Less time was required in the GuttaCore group to remove all root filling material and finish the cavity preparation than in the CLC group (P < .05), especially in the palatal canals. Micro-CT results confirmed that all material was removed from the root-end cavities and the absence of microcracks. CONCLUSIONS: GuttaCore was removed in less time from root-end cavities than root filling performed with the CLC technique. No damage to the surrounding dentin was detected by micro-CT scanning in the 2 groups.


Assuntos
Preparo de Canal Radicular/métodos , Tratamento do Canal Radicular/métodos , Humanos , Maxila , Dente Molar/cirurgia , Qualidade da Assistência à Saúde , Radiografia Dentária , Materiais Restauradores do Canal Radicular/uso terapêutico , Obturação do Canal Radicular/métodos , Obturação do Canal Radicular/normas , Preparo de Canal Radicular/normas , Tratamento do Canal Radicular/normas , Fatores de Tempo , Microtomografia por Raio-X
5.
Eur Arch Paediatr Dent ; 18(3): 139-151, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28508244

RESUMO

AIM: This systematic review was undertaken in order to develop guidelines for the European Academy of Paediatric Dentistry for the management of non-vital permanent anterior teeth with incomplete root development. METHODS: Three techniques were considered; apexification by single or multiple applications of calcium hydroxide, use of Mineral Trioxide Aggregate (MTA) for the creation of an apical plug followed by obturation of the root canal, and finally a Regenerative Endodontic Technique (RET). Scottish Intercollegiate Guideline Network (SIGN) Guidelines (2008) were used for the synthesis of evidence and grade of recommendation. RESULTS: Variable levels of evidence were found and generally evidence related to these areas was found to be weak and of low quality. It was not possible to produce evidence-based guidelines based on the strength of evidence that is currently available for the management of non-vital immature permanent incisors. CONCLUSIONS: Based on the available evidence the European Academy of Paediatric Dentistry proposes Good Clinical Practice Points as a guideline for the management of such teeth. It is proposed that the long term use of calcium hydroxide in the root canals of immature teeth should be avoided and apexification with calcium hydroxide is no longer advocated. The evidence related to the use of a Regenerative Endodontic Technique is currently extremely weak and therefore this technique should only be used in very limited situations where the prognosis with other techniques is deemed to be extremely poor. The current review supports the use of MTA followed by root canal obturation as the treatment of choice.


Assuntos
Tratamento do Canal Radicular , Dente não Vital/terapia , Adolescente , Criança , Dentição Permanente , Odontologia Baseada em Evidências , Humanos , Guias de Prática Clínica como Assunto , Medicina Regenerativa/métodos , Medicina Regenerativa/normas , Obturação do Canal Radicular/métodos , Obturação do Canal Radicular/normas , Tratamento do Canal Radicular/métodos , Tratamento do Canal Radicular/normas
6.
Rio de Janeiro; s.n; 2017. 43 p. tab.
Tese em Português | BBO - Odontologia | ID: biblio-915014

RESUMO

Objetivo: O objetivo deste estudo foi avaliar, por microtomografia computadorizada (micro-CT), a qualidade da obturação de canais mesiais de molares inferiores utilizando os cimentos EndoSequence BC Sealer e AH Plus. Metodologia: Vinte molares inferiores foram divididos em dois grupos (n=10) de acordo com o cimento utilizado na obturação. O preparo quimico-mecânico foi realizado com as limas rotatórias K3XF. As amostras foram escaneadas por micro-CT antes e depois da intrumentação, e depois da obturação. O volume do sistema de canais radiculares (SCR) após a instrumentação e o volume da obturação foram calculados, assim, o volume percentual da obturação e dos espaços vazios pôde ser obtido. Resultados: Todas as amostras apresentaram volumes de obturação menores do que o volume pós instrumentação do SCR (p < 0,05). Não houve diferença estatística significante entre os grupos quanto ao volume da obturação e o volume de espaços vazios (p >0,05). Conclusões: Os cimentos endodônticos EndoSequence BC Sealer e AH Plus proporcionaram uma qualidade semelhante de obturação em canais mesiais de molares inferiores. Nenhum dos cimentos foi capaz de proporcionar total preenchimento do SCR. (AU)


Aim: The aim of this study was to evaluate, by computadorized microtomography (micro-CT), the root canal filling quality of mesial roots of mandibullar molars using EndoSequence BC Sealer and AH Plus sealers. Methodology: Twenty mandibular molars were divided into two groups (n=10) according to the sealer used in the obturation. Root canals were prepared using K3XF rotary files. The specimens were scanned before and after instrumentation, and after obturation by using micro-CT. The root canal system volume after instrumentation, and the filling volume were calculated, so the percentage volume of the filling, and voids and gaps could be obtained. Results: All the specimens presented the final volume smaller than the inicial volume (P < 0.05). There was no significant difference between groups with regard to the filling volume and voids and gaps volume (P > 0.05). Conclusions: EndoSequence BC Sealer and AH Plus sealer promoted a similar root filling quality in mesial root canals of madibullar molars. None of the sealers was able to fill the entire area of the root canal system. (AU)


Assuntos
Humanos , Cimentos Dentários/normas , Materiais Restauradores do Canal Radicular/normas , Obturação do Canal Radicular/normas , Teste de Materiais , Dente Molar , Microtomografia por Raio-X
7.
Oral Health Prev Dent ; 14(3): 241-8, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26669654

RESUMO

PURPOSE: To assess the prevalence of apical periodontitis (AP), as determined by orthopantomograms (OPGs), and its correlation with the quality of root fillings and coronal restorations. MATERIALS AND METHODS: This cross-sectional study evaluated a random sample of 193 patients--112 (58%) females and 81 (42%) males--who presented as new patients at the Division of Endodontics. Digital OPGs were independently examined by two reliability-calibrated endodontists. The total number of teeth present, the location of the root canalfilled teeth, and the presence or absence of AP were recorded for each radiograph. The results were statistically analysed using the chi-square test followed by model building using multiple logistic regression. RESULTS: A total of 324 endodontically treated teeth from the 193 selected radiographs were analysed. The mean number of teeth per patient was 25.5 ± 4.6, with an average of 1.64 root canal treatments per subject. Radiographically detected AP was associated with 190 (58.6%) root canal-treated teeth. The logistic model shows that the quality of endodontic treatment (adjusted odds ratio [ORa] = 1.82; 95% confidence interval [CI]: 1.40-3.17), status of coronal restoration (ORa = 1.77; 95% CI: 1.20-2.61) and the type of material used for coronal restorations (ORa = 1.39; 95% CI: 1.03-1.87) were significantly related to the periapical health of the teeth. CONCLUSIONS: The quality of endodontic treatment, status of coronal restoration and the type of coronal restorative material were found to be the most important factors influencing the health of periradicular tissue.


Assuntos
Periodontite Periapical/diagnóstico por imagem , Radiografia Panorâmica/métodos , Obturação do Canal Radicular/normas , Dente não Vital/diagnóstico por imagem , Adolescente , Adulto , Idoso , Estudos Transversais , Cárie Dentária/diagnóstico por imagem , Adaptação Marginal Dentária , Materiais Dentários/normas , Restauração Dentária Permanente/normas , Feminino , Guta-Percha/normas , Humanos , Masculino , Pessoa de Meia-Idade , Tecido Periapical/diagnóstico por imagem , Radiografia Dentária Digital/métodos , Materiais Restauradores do Canal Radicular/normas , Arábia Saudita , Adulto Jovem
8.
Gerodontology ; 33(3): 290-8, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25180596

RESUMO

OBJECTIVE: The aim of this study was to investigate the relationship between quality of root canal obturations and the presence/absence of periapical lesion in elderly patients. METHODOLOGY: This was a systematic conducted by means analysing studies on the quality of root canal obturations and their relationship with periapical health in elderly patients. The methodological procedures were based on Cochrane. The inclusion criteria for selection of the titles were the following: (i) studies in humans; (ii) sample consisting of individuals aged 60 years or older; (iii) intending criteria defined for the evaluation of quality of root canal obturations; (iv) intending criteria defined for the evaluation of periapical health; (v) determination of the relationship between quality of endodontic treatment and presence of periapical lesions; and (vi) articles published between 1st March 2003 and 1st March 2013. RESULTS: A total of 3161 potentially relevant studies were found in three databases chosen for the literature review, with 1669 being repeated and 395 duplicated. Therefore, the abstracts of 1097 studies were read. A total of 1022 studies were excluded, resulting in 75 articles for full analysis. However, no study could be included in the present literature review. CONCLUSION: There is no consensus on the relationship between the quality of root canal obturations and periapical health in older patients.


Assuntos
Periodontite Periapical/patologia , Obturação do Canal Radicular/normas , Idoso , Humanos , Periodontite Periapical/etiologia
9.
Br Dent J ; 219(10): 481-3, 2015 Nov 27.
Artigo em Inglês | MEDLINE | ID: mdl-26611302

RESUMO

This article will discuss why a root filling that appears satisfactory on a radiograph may fail, and why one which appears unsatisfactory on a radiograph may succeed. In doing so, this article will also discuss the criteria of endodontic success and failure and its implications on the decision to retreat.


Assuntos
Radiografia Dentária , Tratamento do Canal Radicular , Cavidade Pulpar/diagnóstico por imagem , Reparação de Restauração Dentária/métodos , Humanos , Materiais Restauradores do Canal Radicular , Obturação do Canal Radicular/métodos , Obturação do Canal Radicular/normas , Tratamento do Canal Radicular/normas , Resultado do Tratamento
10.
Eur Arch Paediatr Dent ; 16(5): 409-15, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25894249

RESUMO

AIM: The aim was to assess the technical quality of root canal treatment conducted in paediatric patients. No specific data is available assessing endodontic treatment quality in children. General adult populations report satisfactory technical quality between 12.8 and 55.7 %, with higher rates by endodontists (77.4-91.0 %). METHODS: Radiographs of 100 chronological cases, conducted by staff (categorised as; junior staff, middle grades or consultants) in a UK teaching hospital, were evaluated retrospectively. Technical outcomes were compared to the European Society of Endodontology quality guideline consensus. A satisfactory root filling was defined as having: root filling material <2 mm from the radiographical apex; no canal space seen beyond the end of the obturation and an obturation of homogeneous density with no voids. In addition where MTA was used a plug of ≥3 mm was required. Any variation was considered unsatisfactory treatment. RESULTS: 61 % [95 % CI 51-70 %] of cases were deemed satisfactory. Of the remaining obturations 20.5 % were short of the apex, 28.2 % had extruded material and 56.4 % contained voids. Patients with co-operation issues, particularly anxiety, had lower technical outcomes (p = 0.001) and the use of thermoplastic obturation greatly reduced the chance of void inclusion (p = 0.004; OR 0.20 [95 % CI 0.06-0.65]). Although 'staff grade' did not show a statistically significant difference, a trend between experience and quality was suspected. CONCLUSION: Overall technical quality of treatment was comparable to the higher rates found in the general adult population. Additionally thermal obturation may be superior to cold lateral condensation in improving obturation quality, and anxiety negatively impacts on treatment provision.


Assuntos
Tratamento do Canal Radicular/normas , Adolescente , Compostos de Alumínio/química , Compostos de Cálcio/química , Criança , Comportamento Infantil , Competência Clínica , Comportamento Cooperativo , Ansiedade ao Tratamento Odontológico/complicações , Cavidade Pulpar/diagnóstico por imagem , Unidade Hospitalar de Odontologia , Combinação de Medicamentos , Corpos Estranhos/diagnóstico por imagem , Humanos , Óxidos/química , Tecido Periapical/diagnóstico por imagem , Porosidade , Radiografia , Estudos Retrospectivos , Materiais Restauradores do Canal Radicular/química , Obturação do Canal Radicular/normas , Silicatos/química , Ápice Dentário/diagnóstico por imagem , Resultado do Tratamento
11.
Med Princ Pract ; 24(1): 84-91, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25359228

RESUMO

OBJECTIVE: With a microcomputed tomography (microCT) imaging device, we aimed to quantitatively evaluate root canal fillings after commonly used endodontic procedures and also tested the suitability of microCT for this purpose. MATERIALS AND METHODS: Eighty single roots were instrumented and obturated with gutta-percha and Tubli-Seal. They were divided into 4 groups of 20. The Hand groups were instrumented with hand files and filled with thermoplastic (Th) compaction and cold lateral (CL) condensation, i.e. Hand-Th and Hand-CL, respectively. The Rot groups, i.e. Rot-Th and Rot-CL, were instrumented with a rotary ProFile system and filled as above. The roots were scanned and 3-dimensional (3D) visualization was obtained. The number, size, percentage of volume and distribution of voids at the filling/dentine interface (i-voids) and voids surrounded by filling material (s-voids) were measured. RESULTS: Canal fillings differed significantly with regard to the size of both types of voids and the average number of i-voids. All canals presented a low volume of voids. The highest percentage (0.69%) was found for i-voids in the Hand-CL group, while the lowest volume (0.11% for s-voids and 0.14% for i-voids) was in the Hand-Th canals. Apically, in the last 3 mm, i-voids were observed mainly in the Th groups, and s-voids occurred mostly in the coronal part of the canal filling in all cases. CONCLUSION: MicroCT was a useful tool for 3D quantitative evaluations of these root canal fillings. None of the root canal instrumentation and filling methods ensured void-free obturation. CL condensation produced mainly i-voids. With Th compaction, internal s-voids were particularly common, but there were mainly i-voids in the apical part.


Assuntos
Guta-Percha , Materiais Restauradores do Canal Radicular/normas , Obturação do Canal Radicular/normas , Cimento de Óxido de Zinco e Eugenol , Análise de Variância , Humanos , Obturação do Canal Radicular/métodos , Microtomografia por Raio-X/métodos
12.
Oral Health Prev Dent ; 13(1): 85-90, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-24624387

RESUMO

PURPOSE: To evaluate the frequency, distribution and quality of root canal treatment in an adult Nigerian subpopulation and to determine the prevalence of apical periodontitis. MATERIALS AND METHODS: The periapical status and length of root fillings of 756 patients attending Obafemi Awolowo University Teaching Hospital, Ile-Ife, Nigeria for the first time were evaluated using full mouth periapical radiographs. The length of the root canal filling was considered 'adequate' if it was ≤ 2 mm from the radiographic apex, 'under-filled' if it was > 2 mm short of the apex, and 'overfilled' if filling material extended beyond the radiographic apex. Periapical status was assessed using the periapical index (PAI) with teeth classified as having apical periodontitis if the score was over 2. RESULTS: Overall, 61.2% of the patients had root-filled teeth and 67.2% featured apical periodontitis. Of the 21,468 teeth examined, 12.2% had been root filled, and of these 41% exhibited apical periodontitis. The prevalence of root-filled teeth was higher in the younger patients, while the prevalence of apical periodontitis in root-filled teeth was similar between age groups. Root-treated teeth that were overfilled or were mandibular incisors had the highest prevalence of apical disease. Overfilled teeth were more prone to developing an apical radiolucency than were under-filled teeth (P < 0.001 and P < 0.05, respectively). CONCLUSIONS: The prevalences of endodontically treated teeth and apical periodontitis were within the range reported for other countries; however, a very large number of patients required treatment or retreatment.


Assuntos
Periodontite Periapical/epidemiologia , Tratamento do Canal Radicular/estatística & dados numéricos , Adulto , Fatores Etários , Cavidade Pulpar/diagnóstico por imagem , Feminino , Humanos , Incisivo/diagnóstico por imagem , Masculino , Mandíbula/diagnóstico por imagem , Pessoa de Meia-Idade , Nigéria/epidemiologia , Prevalência , Radiografia Interproximal/estatística & dados numéricos , Obturação do Canal Radicular/normas , Tratamento do Canal Radicular/normas , Ápice Dentário/diagnóstico por imagem , Dente não Vital/epidemiologia , Adulto Jovem
13.
J Endod ; 40(12): 2003-8, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25262034

RESUMO

INTRODUCTION: The present study examined the quality of obturation in root canals filled by an experimental non-gutta-percha-based (NGP) root filling system using warm vertical or cold lateral compaction. The quality of obturation was evaluated by comparing the volumetric percentage of gaps and voids identified from similar canals obturated with gutta-percha and an epoxy resin-based sealer using the same obturation techniques. METHODS: Forty single-rooted premolars with oval-shaped canals were cleaned, shaped, and obturated with 1 of the 4 material/obturation technique combinations (n = 10). Filled canals were scanned with micro-computed tomographic imaging. Reconstructed images were analyzed for the volumetric percentage of gaps and voids at 3 canal levels (0-4, 4-8, and 8-12 mm from the working length). Roots were sectioned at the 4-mm, 8-mm, and 12-mm levels. Scanning electron microscopic images of negative replicas of root sections were examined to quantify the circumferential percentage of interfacial gaps and the area percentage of intracanal voids. Data were analyzed with parametric or nonparametric statistical methods. RESULTS: A statistically significant difference was found for the volumetric percentage distribution of gaps and voids for "obturation technique" but not for "material." Significantly higher percentages of gaps and voids were identified in canals obturated with the NGP system using cold lateral compaction. Examination of negative replicas ascribed this difference to a higher area percentage of interfacial gaps rather than more intracanal voids. CONCLUSIONS: Using warm vertical compaction, the NGP system fulfils the objective of 3-dimensional obturation of the canal space in a manner comparable with the results achieved with gutta-percha and a root canal sealer.


Assuntos
Resinas Epóxi/normas , Materiais Restauradores do Canal Radicular/normas , Obturação do Canal Radicular/normas , Cavidade Pulpar/diagnóstico por imagem , Resinas Epóxi/química , Guta-Percha/química , Guta-Percha/normas , Humanos , Processamento de Imagem Assistida por Computador/métodos , Imageamento Tridimensional/métodos , Teste de Materiais , Microscopia Eletrônica de Varredura , Materiais Restauradores do Canal Radicular/química , Obturação do Canal Radicular/métodos , Preparo de Canal Radicular/métodos , Propriedades de Superfície , Temperatura , Microtomografia por Raio-X/métodos
14.
Acta Odontol Scand ; 72(8): 801-5, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24931925

RESUMO

OBJECTIVE: To study the periapical status of root-filled permanent teeth of 9-17-year-olds in Møre & Romsdal county, Norway. MATERIALS AND METHODS: All permanent teeth with endodontic treatment in patients born in 1994-2001 were identified in the dental records of the Public Dental Service. The data collected consisted of chart entries and radiographs. Of 1182 teeth, 174 teeth in 155 patients met further inclusion criteria, i.e. completed endodontic treatment and a follow-up with a readable radiograph of at least 1 year. Periapical status was assessed with the Periapical Index (PAI) and the technical quality of the root fillings was also quantified on a 4-grade visual scale. RESULTS: Apical periodontitis was found on follow-up radiographs in 25% of all teeth and in 48% of the teeth with pre-operative apical periodontitis. Forty-two per cent of root fillings were of adequate technical quality. Adequate technical quality of the root filling was significantly correlated with radiographic success. CONCLUSIONS: About one fourth of all root-filled teeth and almost half of the teeth with pre-operative apical periodontitis showed clear signs of the disease at recall.


Assuntos
Periodontite Periapical/classificação , Tratamento do Canal Radicular/normas , Dente não Vital/terapia , Adolescente , Criança , Feminino , Seguimentos , Humanos , Masculino , Noruega , Periodontite Periapical/diagnóstico por imagem , Radiografia Interproximal , Estudos Retrospectivos , Obturação do Canal Radicular/normas , Raiz Dentária/diagnóstico por imagem , Dente não Vital/diagnóstico por imagem , Resultado do Tratamento
15.
J Dent ; 42(9): 1124-34, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24769108

RESUMO

OBJECTIVES: The present study examined the quality of obturation in root canals obturated by GuttaCore, a gutta-percha-based core-carrier system with a cross-linked thermoset gutta-percha carrier, by comparing the incidence of gaps and voids identified from similar canals obturated by cold lateral compaction or warm vertical compaction. METHODS: Thirty single-rooted premolars with oval-shaped canals were shaped and cleaned, and obturated with one of the three obturation techniques (N=10): GuttaCore, warm vertical compaction or cold lateral compaction. Filled canals were scanned with micro-computed tomography (micro-CT); reconstructed images were analysed for the volumetric percentage of gaps and voids at three canal levels (0-4mm, 4-8mm and 8-12mm from working length). The roots were subsequently sectioned at the 4-mm, 8-mm and 12-mm levels for analyses of the percentage of interfacial gaps, and area percentage of interfacial and intracanal voids, using scanning electron microscopy (SEM) to examine negative replicas of root sections. Data were analysed with parametric or non-parametric statistical methods at α=0.05. RESULTS: Both micro-CT and SEM data indicated that canals obturated with GuttaCore core-carriers had the lowest incidence of interfacial gaps and voids, although the results were not significantly different from canals obturated by warm vertical compaction. Both the GuttaCore and the warm vertical compaction groups, in turn, had significantly lower incidences of gaps and voids than the cold lateral compaction group. CONCLUSIONS: Because of the similarity in obturation quality between GuttaCore and warm vertical compaction, practitioners may find the GuttaCore core-carrier technique a valuable alternative for obturation of oval-shaped canals. CLINICAL SIGNIFICANCE: The quality of obturation achieved by GuttaCore in single-rooted canals is not significantly different from that achieved by warm vertical compaction.


Assuntos
Guta-Percha/normas , Materiais Restauradores do Canal Radicular/normas , Obturação do Canal Radicular/instrumentação , Dente Pré-Molar/anatomia & histologia , Cavidade Pulpar/anatomia & histologia , Desenho de Equipamento , Guta-Percha/química , Humanos , Umidade , Processamento de Imagem Assistida por Computador/métodos , Imageamento Tridimensional/métodos , Teste de Materiais , Microscopia Eletrônica de Varredura , Materiais Restauradores do Canal Radicular/química , Obturação do Canal Radicular/métodos , Obturação do Canal Radicular/normas , Preparo de Canal Radicular/instrumentação , Preparo de Canal Radicular/métodos , Propriedades de Superfície , Temperatura , Água/química , Microtomografia por Raio-X/métodos
16.
Gen Dent ; 62(2): 20-3, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24598490

RESUMO

This in vitro study sought to evaluate the sealing ability of 3 root canal obturator systems after immersion in simulated body fluid for 1 year. The coronal sections of 30 single-rooted teeth were removed at the cementoenamel junction at 12 mm (±1 mm), and roots were instrumented with nickel titanium instruments. Specimens were divided into 3 groups (n = 10) according to the obturation manufacturer-specified system and immersed in simulated body fluid. A digital fluid flow-meter was used to detect the flow rate at 1 week, 1 month, and 12 months after immersion. This study demonstrated that the tested endodontic obturation systems were unable to keep their sealing ability stable during the first year. At 12 months, all root filling systems showed increased flow rates (P < 0.0001).


Assuntos
Obturação do Canal Radicular/métodos , Infiltração Dentária/prevenção & controle , Humanos , Técnicas In Vitro , Incisivo , Selantes de Fossas e Fissuras/uso terapêutico , Obturação do Canal Radicular/normas , Fatores de Tempo , Resultado do Tratamento
17.
J Endod ; 40(2): 182-6, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24461401

RESUMO

INTRODUCTION: The purpose of this study was to assess the prevalence of apical periodontitis in root canal-treated teeth from the Korean population and to evaluate the relationship between the quality of root canal fillings and coronal restorations and the periapical status of these teeth. METHODS: Full-mouth periapical radiographs at the Dental Hospital of Yonsei University, Seoul, South Korea, were examined. A total of 1030 endodontically treated teeth restored with full veneer crown-type restorations were evaluated by 2 independent examiners. Teeth were classified as healthy or diseased according to the periapical status. The quality of endodontic treatment and coronal restorations were also classified via radiographic and clinical evaluation. The data were analyzed using the chi-square test and logistic regression. RESULTS: Forty-one percent of all endodontically treated teeth were classified as diseased. Approximately 35.6% of the teeth had endodontic treatments that were rated as adequate. The diseased teeth rate for cases with adequate endodontic treatment was 24.5%, which was significantly lower when compared with teeth with inadequate endodontic treatment (49.9%). The number of teeth with adequate coronal restorations was 706 (68.5%). Teeth with adequate coronal restorations had a significantly decreased prevalence of diseased teeth (34.7%) compared with teeth with inadequate coronal restorations (54.3%). Teeth with both adequate root fillings and restorations showed a significantly better outcome (82.3%) than the others, and teeth with both inadequate root fillings and restorations showed a significantly worse outcome (41.2%) than the others. CONCLUSIONS: Data from this Korean population showed a relatively high prevalence of apical periodontitis. The quality of endodontic treatment and coronal restorations were of equal importance and were strong independent predictors of the periapical status.


Assuntos
Coroas/normas , Periodontite Periapical/classificação , Obturação do Canal Radicular/normas , Dente não Vital/terapia , Facetas Dentárias/normas , Feminino , Humanos , Masculino , Ligamento Periodontal/diagnóstico por imagem , Radiografia Interproximal/métodos , Radiografia Dentária Digital/métodos , República da Coreia , Dente não Vital/diagnóstico por imagem , Resultado do Tratamento
18.
J Endod ; 40(2): 187-91, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24461402

RESUMO

INTRODUCTION: Apical surgery is an important treatment option for teeth with postendodontic apical periodontitis. However, little information is available regarding treatment planning in cases referred for apical surgery. This study evaluated the decisions made in such cases and analyzed the variables influencing the decision-making process. METHODS: The study retrospectively assessed clinical and radiographic data of 330 teeth that had been referred to a specialist in apical surgery with regard to the treatment decisions made in those teeth. The clinical and radiographic variables were divided into subcategories to analyze which factors influenced the decision-making process. RESULTS: The treatment decisions included apical surgery (59.1%), tooth extraction (25.8%), no treatment (9.1%), and nonsurgical endodontic retreatment (6.1%). Variables that showed statistically significant differences comparing treatment decisions among subcategories included probing depth (P = .001), clinical attachment level (P = .0001), tooth mobility (P = .012), pain (P = .014), clinical signs (P = .0001), length (P = .041) and quality (P = .026) of the root canal filling, and size (P = .0001) and location (P = .0001) of the periapical lesion. CONCLUSIONS: This study shows that apical surgery was the most frequently made treatment decision in teeth referred to a specialist in apical surgery, but every fourth tooth was considered nonretainable and was scheduled for extraction. The data showed that the most common variables that influenced the decision to extract teeth were teeth with an increased probing depth and tooth mobility and teeth presenting with lesions not located at the apex.


Assuntos
Apicectomia/métodos , Tomada de Decisões , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Planejamento de Assistência ao Paciente , Doenças Periapicais/diagnóstico por imagem , Perda da Inserção Periodontal/complicações , Bolsa Periodontal/complicações , Técnica para Retentor Intrarradicular , Radiografia Interproximal/métodos , Encaminhamento e Consulta , Retratamento , Estudos Retrospectivos , Obturação do Canal Radicular/normas , Tratamento do Canal Radicular/métodos , Extração Dentária/métodos , Mobilidade Dentária/complicações , Odontalgia/complicações , Adulto Jovem
19.
Aust Endod J ; 40(3): 131-5, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24118357

RESUMO

The purpose of this ex vivo study was to determine the quality of root fillings in experimental internal resorptive cavities filled using cold lateral condensation (CLC), vertical condensation and Thermafil techniques. Forty-five extracted maxillary canine teeth were selected. After root canal instrumentation, the roots were sectioned horizontally and experimental internal resorption cavities were prepared. The root sections were re-approximated with a luting agent and randomly assigned to three groups (n = 15) to be filled using CLC, vertical condensation and Thermafil, respectively. Assessment of obturation quality in the internal resorptive cavity was performed using a desktop X-ray micro focus computed tomography scanner, and the percentage of gutta-percha (GP), sealer and voiding was calculated for each specimen. Data were statistically analysed using non-parametric tests, with P < 0.05 denoting a statistically significant difference. Vertical condensation filled 96.25 ± 8.31% of the total artificial cavity, and was superior to CLC (63.20 ± 16.87%) and Thermafil (59.26 ± 18.47%). The mean percentage of voids was 3.75 ± 8.31% in the vertical condensation group, 37.09 ± 17.13% in the CLC group and 41.06 ± 18.60% in the Thermafil group. We conclude that obturation of experimental resorption cavities is significantly better when using vertical condensation than when using other GP-based techniques.


Assuntos
Guta-Percha/normas , Materiais Restauradores do Canal Radicular/normas , Obturação do Canal Radicular/normas , Reabsorção da Raiz/terapia , Microtomografia por Raio-X/métodos , Dente Canino/diagnóstico por imagem , Cavidade Pulpar/diagnóstico por imagem , Resinas Epóxi/química , Resinas Epóxi/normas , Guta-Percha/química , Humanos , Imageamento Tridimensional/métodos , Teste de Materiais , Distribuição Aleatória , Materiais Restauradores do Canal Radicular/química , Obturação do Canal Radicular/métodos , Preparo de Canal Radicular/métodos , Reabsorção da Raiz/diagnóstico por imagem , Propriedades de Superfície , Ápice Dentário/diagnóstico por imagem
20.
J Contemp Dent Pract ; 14(4): 777-83, 2013 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-24309366

RESUMO

A review of the literature on the use of carrier based obturation materials focusing on Thermafil and Resilon based obturator (RealSeal 1) are presented in this article. The review addressed the history, apical leakage, coronal leakage, biocompatibility, sealing ability and clinical success of Thermafil and RealSeal 1. Based on the studies gathered, this review concluded that both treatment techniques (Thermafil and RealSeal 1) did not provide excellent apical sealing ability. More research should be done to try to overcome their main drawback, its sealing ability.


Assuntos
Materiais Restauradores do Canal Radicular/normas , Materiais Biocompatíveis/normas , Resinas Compostas/normas , Colagem Dentária/normas , Infiltração Dentária/classificação , Guta-Percha/normas , Humanos , Obturação do Canal Radicular/normas
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