Quality Of Root Canal Fillings Research Articles

Retrospective Investigation of The Relationship Between Coronal Restoration and Quality of Root Canal Fillings and Apical Periodontitis in a Specific Turkish Population

Retrospective Investigation of The Relationship Between Coronal Restoration and Quality of Root Canal Fillings and Apical Periodontitis in a Specific Turkish Population

The first experiences of preclinical dentistry students with rotary instruments: A pilot study

Abstract Introduction: Rotary instrumentation has been included in the undergraduate endodontic curriculum to improve the quality of endodontic treatment. The aim of this study was to compare the technical quality of root canal fillings performed by preclinical dentistry students trained with hand instrumentation (THI) or not during their initial trial with rotary instruments. Materials and Methods: Twenty-four 3rd-year students were distributed into two groups: 12 students THI group and 12 students not trained with hand instrumentation (NTHI group). Both the groups received a 50-min theoretical lecture and a demonstration about the ProTaper Universal® system before being asked to complete endodontic treatments on one extracted maxillary central incisor, premolar, and molar using rotary instrumentation and obturation with the single-cone technique. The endodontic treatment technical quality was determined by periapical radiographs. Data were statistically analyzed, and P < 0.05 was considered statistically significant. Results: A total of 144 root canals were performed by preclinical students. Although the difference in the technical quality of the canals was nonsignificant among the groups (P > 0.05), the THI group had more adequately filled root canals (45.8%) than the NTHI group (29.2%). Only maxillary central incisors had underfilled canals, whereas teeth with multirooted canals were subjected to various procedural errors in both the groups (P > 0.05). Conclusions: Intensive hand instrumentation (HI) preclinical training did not significantly improve the technical quality of root canals performed by preclinical dentistry students during their initial trial with rotary instruments. The student’s familiarity with HI did not decrease the incidence of procedural errors when performing root canal treatment with rotary instruments.

Assessment of the quality of root canal fillings performed on extracted teeth by undergraduate dental students in a sample from Saudi Arabia

BackgroundThe educational process in the field of endodontics commences with preclinical exercises to enhance students’ proficiency in cleaning, shaping, and performing root canal fillings. Therefore, this study aimed to radiographically evaluate the technical quality of root canal fillings performed by preclinical students on extracted teeth at the College of Dentistry, University of Ha’il, Saudi Arabia.MethodsA total of 788 extracted human teeth received root canal treatment by undergraduate students. The samples were then gathered and radiographically assessed using the three quality criteria of length, density, and taper. The category of root canal fillings was classified as either acceptable or unacceptable. The criteria for evaluating the acceptability of filling quality were defined based on the presence of adequate length, density, and taper. The effectiveness of root canal fillings was also evaluated in relation to the tooth type, sex, and treatment year. The agreement between the examiners was evaluated using Cohen’s kappa test, and the relationship between the research variables was determined using the chi-squared test. The significance threshold was set at 0. 05.ResultsThe overall quality of root filling was determined to be satisfactory in 532 (67.5%) of 788 endodontically treated extracted teeth. The majority of the research sample (88.1%) had enough length, 89.6% had adequate density, and 86.4% had acceptable taper. The quality of anterior teeth was substantially better than that of posterior teeth (p < 0.001). Our findings showed that the quality of root canals was better in 2022 than it had been in earlier years (p = 0.001). The three RCT quality criteria differed significantly when compared between sexes (p = 0.002).ConclusionsThe quality of the root canal fillings completed by undergraduate students was rated as acceptable. The findings of the research suggest that the implementation of routine assessments to evaluate the technical competence of undergraduate dental students performing root canal treatments could provide significant insights into the efficacy of the curriculum requirements.

Association of Quality of Root Canal Fillings and Coronal Restorations on the Periapical Status of Adult Population in Pokhara Academy of Health Sciences

INTRODUCTION A cross-sectional study was done to determine the prevalence of apical periodontitis (AP) in root canal treated teeth in a selected population, and to evaluate the association of the quality of root canal fillings and Coronal restorations (CR) on the Periapical status of root-filled teeth. MATERIAL AND METHODS Total of 270 Orthopantomograms (OPGs) were evaluated. Out of which root canal treatment (RCT) had been performed in 400 teeth. RESULTS Patients with inadequate root canal filling length (77.4%), density (76.1%) and coronal restoration (80.1%) had significantly higher apical periodontitis seen than those with adequate root canal filling length (38.5%), density (48.1%) and coronal restoration (47.4%) (p&lt;0.001, p&lt;0.001, p&lt;0.001 respectively). CONCLUSION Our study revealed that combination of adequate CR, adequate density of root canal filling and adequate length of root filling resulted in significantly reduced incidence of AP.

Evaluation of the Impact of Calcium Silicate-Based Sealer Insertion Technique on Root Canal Obturation Quality: A Micro-Computed Tomography Study.

Calcium silicate-based sealers have gained in popularity over time due to their physicochemical/biological properties and their possible use with single-cone obturation. The single cone technique is a sealer-based obturation and there is still a knowledge gap regarding the potential impact of the sealer insertion method on the root canal-filling quality. Therefore, the aim of this micro-CT study was to assess the impact of the calcium silicate-based sealer insertion technique on void occurrence and on the sealer extrusion following single-cone obturation. Thirty-six single-rooted mandibular premolars with one canal were shaped with Reciproc® R25 (VDW, Munich, Germany) then divided randomly into four groups of nine canals, each depending on the TotalFill® BC Sealer insertion technique used with single cone obturation: injection in the coronal two-thirds (group A); injection in the coronal two-thirds followed by direct sonic activation (group B); injection in the coronal two-thirds followed by indirect ultrasonic activation on tweezers (group C); sealer applied only on the master-cone (control group D). Samples were then scanned using micro-CT for voids and sealer extrusion calculation. Data were statistically analyzed using v.26 IBM; Results: No statistically significant differences were noted between the four groups in terms of voids; nevertheless, sonic activation (group B) followed by ultrasonic activation on the tweezers (group C) showed the best results (p = 0.066). Group D showed significantly less sealer extrusion when compared with group C (p = 0.044), with no statistically significant differences between groups D, A and B (p > 0.05). Despite no significant differences observed between the different sealer placement techniques, the use of sonic and ultrasonic activation might be promising to reduce void occurrence. Further investigations are needed to demonstrate the potential benefit of calcium silicate-based sealer activation especially in wide and oval root canals in order to improve the quality of the single-cone obturation.

Influence of the quality of canal obturation and prosthetic restoration on the peri-apical region

The periapical inflammatory lesion of endodontic origin (LIPOE) is a very common condition and constitutes both a diagnostic and a therapeutic challenge in dentistry. The present study aims to describe the frequency of LIPOE after endodontic treatment consecutive to the quality of root canal fillings and prosthetic restorations of abutment teeth and to identify the qualities of root canal fillings and prosthetic restorations associated with the occurrence of LIPOE. This is a prospective, descriptive and cross-sectional study carried out from March 2019 to August 2022. One hundred and eighty patients wearing Joint Prostheses for at least 2 years with endodontically treated abutment teeth have been recruited; the evaluation of the quality of prosthetic restoration was established according to the criteria of Hickel R while the quality of the root canal filling was judged according to the criteria of Schaeffer MA. The frequency of LIPOE on the abutment teeth was 59.4%. The results highlighted that inadequate quality of prosthetic restoration and root canal filling is associated with the occurrence of LIPOE with a highly significant difference (p˂0.000) In order, to reduce the prevalence of LIPOE and mitigate its effects, it is essential to follow the rules of the art when considering mechanical and biological imperatives during endodontic treatment, as well as good training in prosthetic restoration.

Comparison of three different biomaterials used in in vitro molar apexification models

ObjectivesNew biomaterials had some advantages such as mixing and easier application as compared to traditional MTA in single step apexification method. This study aimed to compare the three biomaterials used in the apexification treatment of immature molar teeth in terms of the time spent, the quality of the canal filling and the number of x-rays taken to complete the process.MethodsThe root canals of the extracted thirty molar teeth were shaped with rotary tools. To obtain the apexification model, ProTaper F3 was used retrograde. The teeth were randomly assigned into three groups based on the material used to seal the apex; Group 1: Pro Root MTA, Group 2: MTA Flow, Group 3: Biodentine. The amounts of the filling, the number of radiographs taken until treatment completion and the treatment duration were recorded. Then teeth were fixed for micro computed tomography imaging for quality evaluation of canal filling.ResultsBiodentine was superior to the other filling materials according to time. MTA Flow provided greater filling volume than the other filling materials in the rank comparison for the mesiobuccal canals. MTA Flow had greater filling volume than ProRoot MTA in the palatinal/distal canals(p = 0.039). Biodentine had greater filling volume more than MTA Flow in the mesiolingual/distobuccal canals (p = 0.049).ConclusionsMTA Flow was found as a suitable biomaterial according to the treatment time and quality of root canal fillings.

Post-treatment periapical status related to the quality of root canal fillings in adults living in Vojvodina

Background/Aim. Apical periodontitis (AP) is an acute or chronic inflammation of the periradicular tissue, usually caused by the presence of microbial irritants in the root canal system. The aim of the study was to radiographically assess the AP prevalence in root-filled teeth (RFT) in adults from an urban area of Vojvodina, Serbia. Methods. Randomly selected digital ortopantomographs of 616 subjects who visited the Clinic of Dentistry of Vojvodina, from January 2019 to December 2020 were examined. Periapical status, root canal filling (RCF) quality, type of coronal restorations, and their relationships were evaluated. The Chisquared (?2) test was used for statistical analysis. Results. The total number of endodontically treated teeth was 965; 44.25% of them received an adequate RCF score, and 34.9% had AP, which was diagnosed i n 5 7.4% of inadequately s cored RFT. Posterior teeth had significantly worse RCF quality than anterior teeth (p &lt; 0.001). The direct logistic regression results indicated that a technically well-performed RCF reduced the risk of AP almost 21-fold. The prevalence of AP in our cohort was not influenced by the type of restoration (direct or indirect), but statistically significantly, the highest prevalence of AP was found in RFT without any coronal restoration. Conclusion. The results of this study reaffirm that technically high-quality root canal treatment is crucial to ensure a more predictable root canal treatment outcome.

Quality of Root Canal Filling in Manually and Rotary-Filed Single-Rooted Teeth

Objective: This study aimed to determine if there was a significant difference in root canal obturation quality between single-rooted teeth produced using a manual approach and those prepared using a rotational method, as determined by intraoral periapical radiographs. Study Design: Randomized control trial Place and Duration: This randomized study was conducted at Bakhtawaramin Medical and Dental College during in the period from April, 2022 to September, 2022. Methods: Total 80 patients of both genders were presented. All the included cases had single rooted teeth. Age, gender, and residence were some of the detailed demographic information that was documented after getting informed written consent. Patients were equally divided in two groups. Group I underwent manual root canal treatment in 40 cases while in group II rotary endodontic preparation. Outcomes among both groups were recorded in terms of quality of root canal filling. SPSS 23.0 was used to analyze all data. Results: There were 45 (56.3%) females and 35 (43.7%) males. Mean age of the patients in group I was 33.3±8.35 years and in group II mean age was 34.9±7.23 years. We did not find any significant difference in root canal filling and homogeneity among both groups. Group II showed a significantly good results of T score as compared to group I with p value &lt;0.005. Conclusion: According to the results of this research, the rotary approach yielded higher quality obturations in terms of taper and overall quality than did the traditional method. Despite this, there was no difference between rotary and manual instrumentation in terms of the radiographic technical quality of the root canal obturation with respect to length and density. Keywords: obturation quality, Root Canal Treatment, Manual technique, Rotary Technique

Quality of endodontic record-keeping and root canal obturation performed by final year undergraduate dental students: An audit during the COVID-19 pandemic.

To assess the quality of endodontic record-keeping and root canal obturation performed by undergraduate final year dental students during the COVID-19 pandemic. Dental records and dental radiographs of patients who received endodontic treatments between March 2020 and March 2022 by undergraduate students during the COVID-19 pandemic were included. The audit data were collected based on the European Society of Endodontology guidelines retrospectively via assessing the patient's clinical records and intraoral periapical radiograph. Root canal obturation quality was evaluated based on the following parameters: adaptation, length, taper, and mishap. A root filling is defined as satisfactory only when all four parameters were graded as acceptable. Subsequently, the data were recorded and analysed using Chi-Square test with the level of significance set at p = 0.05. A total of 111 patient records with 111 root canal-treated teeth were evaluated. The highest percentage of documented evidence was noted in the patient's general records, while the endodontic treatment records showed the lowest percentage of documented evidence. 78 (70.3%) of root canal-treated teeth were deemed satisfactory with acceptable adaptation, length, taper, and absence of mishap. Moreover, no statistical significance in terms of root canal filling quality was noted between anterior and posterior teeth, and between maxillary and mandibular arch. Although patient records and root canal fillings quality were deemed satisfactory in most cases, strict documentation requirements and continuing dental education in audit training are necessary for quality assurance.

Periapical status and technical quality in root canal filled teeth in a cross sectional study in Jönköping, Sweden

Objective To investigate the quality of root canal fillings and frequency of apical periodontitis (AP) in root canal filled teeth in a Swedish population. Material and methods This study used data from a cross-sectional survey conducted in 2013. The root canal filling quality and periapical status were assessed in 491 root canal filled teeth in 196 individuals aged 20–70 years, randomly selected from the population of Jönköping, Sweden. All root canal filled teeth were examined with periapical radiographs. Three calibrated observers recorded length and density in root canal fillings as well as periapical status according to the Periapical Index. A root filling ending within 0.5–2 mm from the radiographic apex without lateral or apical voids was considered adequate. Data were analyzed in a generalized estimating equation (GEE) model with AP as dependent variable and gender, age, number of teeth, number of root filled teeth, tooth type, and root filling quality as independent variables. Results Teeth with technically inadequate root fillings were associated with AP in a simple GEE-analysis. In the multiple GEE-model, the association between technical quality and apical peridontitis was nonsignificant when controlling for tooth type and gender. Conclusions The quality of root canal fillings is poor and the prevalence of AP in root canal filled teeth is high, particularly in molar teeth, in a Swedish population.

Comparative Evaluation of Adequacy of Root Canal Treatment Performed by Interns and Undergraduate Dental Students—A Cross-Sectional, Retrospective Study

This study aimed to assess the errors that happened during root canal treatment (RCT) and compare the quality of root canal fillings (RCFs) performed by different academic grades of dental students at Jouf University. Materials and Methods: a retrospective audit study was conducted to check the errors that occurred during RCT performed by seniors and undergraduates. The quality of the RCFs were evaluated, using digital periapical radiographs depending on previously validated criteria. Data analyses were performed using Statistical Package for the Social Sciences. Descriptive statistics were used for expressing the frequencies of variables and the Chi-square test was used for comparing different variables with a 0.05 level of significance. Results: overall, 332 endodontically treated teeth (566 root canals) were finally chosen for the study. Out of these treated cases, 156 teeth (47%) had a total of 287 recorded errors, mainly in posterior teeth. From the total number of errors, short obturation was the highest error occurred (29%), followed by lack of apical seal (25.1%). Root perforation was the least reported error (2.8%), proceeded by broken instruments (5.6%). A total of 13.2% of the errors were teeth left with unfilled canals, while 7.7% were for an overextended filling. There were no significant differences between the quality of RCF performed by different academic grades. Conclusion: depending on the current study, the quality of RCTs performed by seniors and undergraduate students was 53% acceptable. A clear plan should be applied to improve the quality of treatment outcomes of undergraduate students by implementing more effective preclinical training courses, increasing the ration of supervisor-to-students, and using more advanced modalities during treatment.

Radiological assessment of prevalence and quality of endodontic treatments in a Turkish subpopulation

<h3>Objective</h3> The aim of this study was to determine the current prevalence and quality of endodontic treatments and investigate the relationship of various factors with periapical status in a Turkish subpopulation. <h3>Study Design</h3> The CBCT images of 1069 patients (50.9% males, 49.1% females; mean age 45.32 ± 13.50 years) who applied to Kocaeli University Faculty of Dentistry between 2015 and 2020 were retrospectively analyzed. In total, 20,646 teeth were examined; 1,604 teeth that had undergone root canal treatment met the criteria and were included in the study. The relationship between periapical status of the endodontically treated teeth and the quality of the root canal treatment was recorded. Periapical status was assessed using a modified CBCT periapical index (PAI) by two independent observers. The relation between periapical status and quality of root canal fillings (RCFs) was analyzed statistically using the chi-square test. <h3>Results</h3> The prevalence of apical periodontitis (AP) for teeth with RCF was 56.8%, while 7.8% of all teeth had had endodontic treatment. The prevalence of AP was 44.3% in teeth with short RCF, 10.8% with overextended RCF, 35.7% with inadequate RCF, and 15.5% with untreated root canals. 76.2% of root canal obturated teeth with procedural errors were associated with AP. No statistically significant differences were found between genders in terms of AP (p>0,05). AP developed more frequently in teeth treated with procedural errors. <h3>Conclusion</h3> The quality of root canal treatment was poor in this subpopulation. There is a substantial need to improve the technical quality of endodontic treatment. <b>Statement of Ethical Review</b> Human/Animal subjects were used and this study was approved by an institutional ethics panel

Radiological Assessment of Prevalance and Quality of Periapical Status of Endodontic Treatments.

BackgroundThe aim of this study was to determine the current prevalence and quality of endodontic treatments and investigate the relationship of various factors with posttreatment endodontic disease (PTED) in a Turkish subpopulation.Material/MethodsThe cone beam computed tomography (CBCT) images of 1069 patients (male, 50.9%; female, 49.1%; mean age, 45.32±13.50 years) were retrospectively analyzed. A total of 20 646 teeth were examined; 1604 had undergone root canal. Periapical status was assessed using a modified CBCT periapical index. The relationship between periapical status and quality of root canal fillings (RCFs) was analyzed statistically using the chi-square test. Multivariate logistic regression was performed to evaluate the effect of individual parameters by adjusting them for other variables.ResultsA total of 7.8% of all teeth had RCF. The prevalence of poor filling (having at least 1 procedural error) was 54.1%; the prevalence of PTED was 56.8%. The prevalence of PTED was 44.3% in teeth with short RCF, 10.8% with overextended RCF, 35.7% with nonhomogeneous RCF, and 15.5% in teeth with untreated root canals. The rate of RCF teeth with procedural errors associated with PTED was 76.2%. There was no significant difference between sexes in apical periodontitis (P>0.05), which developed more frequently in teeth with procedural errors.ConclusionsThe overall prevalence of poor fillings (having at least 1 procedural error) among RCF teeth was high (54.1%) in this subpopulation. There is a substantial need to improve the technical quality of endodontic treatment.

An Audit of the Technical Quality and Iatrogenic Errors of Root Canal Treatment by Undergraduate Dental Students at the University of Sharjah.

The aim of this study was to determine the technical quality of root canal fillings and the presence of iatrogenic errors in the cases treated by undergraduate dental students using radiographic images. This study included 480 root-filled teeth, which were evaluated using intraoral periapical radiographic images. The technical quality of obturation was assessed by observing the length, density, and taperness of the root filling. Ledges, apical transportation, fractured instruments, zipping, and root perforation were recorded as iatrogenic errors. Teeth were classified as acceptable if the technical parameters were adequate and there were no iatrogenic errors. Data were statistically analyzed using Pearson's chi-squared test. The quality of root filling was acceptable in 183 of the 480 teeth. The rate of acceptable quality was higher for the teeth treated by 4th-year students (41.9%) than for those treated by 5th-year students (27.4%; p = 0.004). Length and taperness were adequate in more of the patients treated by the 4th-year students (p<0.05). There was a significant difference in the incidence of ledge formation and apical transportation in relation to the student's level (p<0.05). The technical quality of root fillings performed without iatrogenic errors by undergraduate dental students was declared acceptable in 38.1% of the assessed teeth. There was a noticeable difference in the quality of root canal treatment between the 4th- and 5th-year students. The findings demonstrate that periodic assessment of the technical quality of root filling performed by undergraduate dental students provides feedback on curriculum standards.

Prevalence of periapical lesions in non-endodontically and endodontically treated teeth in an urban Iraqi adult subpopulation: A retrospective CBCT analysis

This study aimed to assess the prevalence of apical periodontitis (AP) and its association with the presence/quality of root canal filling (RCF) and coronal restoration (CR) in Iraqi population. A total of 385 CBCT scans of patients (18-45) yrs. old with 9250 teeth were examined. The teeth were grouped according to the presence/absence of apical radiolucency, presence/radiographic quality of RCF, and CR. Chi-square and Kappa were used to assess associations and intra-consensus reliability. Logistic regression was used to predict risk factors associated with AP. The significant level was set at p<0.05. AP was prevalent in 17.7 and 80.2% of teeth without RCT and with RCT (p<0.05), respectively. AP in root canal-treated teeth with missed canals (93.2%) was higher than that in root canal-treated teeth with no missing canal (78.3%) (p<0.05). AP in teeth with inadequate RCF (87%) was higher than that in teeth with adequate RCF (63%) (P<0.05). No difference in the prevalence of AP in teeth with adequate vs inadequate CR ((79.7%) vs (81%), respectively) (p>0.05). The presence of AP was significantly associated with inadequate RCF (vs adequate RCF) (OR=4.16, CI 95% 2.29-7.56, P<0.05), and was not associated with inadequate CR (vs adequate CR) (OR=-0.71, CI 95% 0.35-1.42, P>0.05). Intra-consensus reliability was (0.9) for AP and (0.82) for RCF and CR quality. AP was highly prevalent in teeth with previous root canal filling compared to non-treated teeth. AP was significantly associated with inadequacy of root canal filling but not with the inadequacy of coronal restoration. Key words:Apical periodontitis, cone beam computed tomography, root canal treatment, endodontics.

The quality of root canal treatment and periapical status of permanent teeth in Turkish children and teens: a retrospective CBCT study.

This study aimed to assess the quality of root canal fillings and the prevalence of periapical radiolucencies in the permanent teeth of 6-18year-old Turkish children. CBCT images of 150 patients' 235 teeth with a mean age of 16.0 ± 2.06years were included. Root development stage, quality of root canal filling, the presence and severity of periapical radiolucencies, and their relationship with anatomical structures were recorded. Correlations between the quality of root canal filling, periapical lesion, and lesion size were assessed using regression analyses. A total of 235 teeth (528 root canals) were evaluated. 65.5% of root canals had periapical lesions. Immature roots and mandibular teeth had the highest prevalence and the largest size of periapical radiolucencies (p < 0.05). Overfilling (n = 52), underfilling (n = 93), unfilled (n = 46), inhomogeneously filled (n = 113) root canals and poor coronal restoration (n = 85 teeth) were observed in terms of technical failures of endodontic treatment. The quality of endodontic treatment was associated with the presence of periapical lesion and lesion size (p < 0.05). Teeth with under-filled, overfilled or inhomogeneously filled root canals and poor coronal restoration had a periapical lesion larger than 5mm (p < 0.05). Immature teeth were most associated with the presence of lesion (OR = 4.07) and the lesion size > 5mm (OR = 3.71). The prevalence of periapical radiolucencies in young permanent teeth showed an increase when the tooth was an incisor, had incomplete root development, or the root filling had technical errors.

Micro–computed Tomographic Evaluation of the Quality of Root Canal Fillings in Mandibular Molars after Obturation for 54 Months

IntroductionThe present study evaluated the percentage volume of voids in root canals of mandibular molars that had been obturated for 54 months. MethodsThirty extracted human mandibular molars were instrumented and debrided. The teeth were assigned to 3 groups (n = 10) according to the filling technique and sealer used: the single-cone technique using AH Plus sealer (AHS; Dentsply Sirona Endodontics, Tulsa, OK) or EndoSequence BC sealer (BCS; Brasseler USA Dental LLC, Savannah, GA) and the warm vertical compaction technique using AH Plus sealer (AHW). The specimens were stored at 37°C and 100% humidity. Micro–computed tomographic imaging was used to scan each specimen 1 day 54 months after obturation. Data were analyzed using 1-way analysis of variance and the paired t test. ResultsThe percentage volume of voids in the teeth 1 day after obturation in the AHS group was higher than in the BCS group and the AHW group (P < .05). After 54 months, the proportion of voids decreased in all groups (P < .05). No significant difference was observed between the AHS group and the BCS group after 54 months. Teeth in the AHW group contained fewer voids than the AHS group (P < .05). ConclusionsVoids in root canal filling were reduced 54 months after obturation. The warm vertical compaction technique achieved better root canal filling quality in mandibular molars than the single-cone technique when using AHS after long-term storage at 100% humidity.

Effect of prosthetic restorations and root canal fillings on periapical health in a selected patient group.

Aims To examine the effect of the quality of root canal fillings and prosthetic restorations on the frequency of apical periodontitis (AP).Methodology A total of 200 radiographs of 1,098 teeth with indirect restorations were selected. Each case was documented by age, sex, tooth location, tooth type, restoration type and presence of root canal treatment (RCT). Teeth were categorised as healthy or diseased considering periapical health. The quality of RCT and prosthetic restorations was categorised by radiographic and clinical examinations. Data were analysed using chi-squared test and logistic regression.Results Inadequate prosthetic restorations were found to be less healthy than the adequate ones. Statistical significance was found in teeth with RCT, which had a higher rate of AP (15.8%). Root-filled teeth categorised as inadequately treated (24.1%) were significantly unhealthier than the adequately root-filled teeth. Teeth with inadequate prosthetic restorations and RCT had an increase in AP risk of 6.41 and 20.74 times, respectively (p <0.05).Conclusions Results showed that AP risk was increased by both inadequate RCT and prosthetic restorations. Quality of RCT significantly affected periapical health more than the quality of prosthetic restorations. Not only radiographic but also clinical examination of restorations is required for successful evaluation.

Radiographic Evaluation of the Periapical Status and Technical Quality of Root Canal Fillings Performed by Endodontic Resident of UEM

AbstractTechnical quality of endodontic treatment can influence dental prognosis. The aim of the present study was to evaluate radiographically the initial periapical condition and the technical quality of root canal fillings performed by endodontic residents at UEM in 2015 and 2016. After data collection and descriptive statistics, performed by two independent examiners, the Kappa coefficient was used to assess the agreement between them. The chi-square test was used to verify a possible association of sex, tooth and quality of the restoration, with the presence of a periapical lesion. Most referrals for endodontic treatment were molars (50.5%) and female patients (63.2%), with a mean age of 39.3 (± 13.3) years. Most teeth were diagnosed with pulp necrosis (44.1%), and this condition held 74% of the teeth with chronic periapical lesions. Bone rarefaction was seen mainly in molars (20%) and teeth without restorative treatments (43.5%). Chi-square test evidenced that sex (p=0.303), tooth (p=0.349) and quality of restoration (p=0.070) were not associated with the presence of periapical bone rarefaction. After finishing the 233 root canal fillings, the apical limit and condensation were satisfactory in 91% and 100% of cases, respectively. In conclusion, the presence of chronic periapical lesion was not associated with sex, tooth or quality of the restoration. The root canal fillings performed by endodontic residents was satisfactory. Keywords: Endodontics. Root Canal Therapy. Periapical Periodontitis. ResumoA qualidade técnica do tratamento endodôntico pode influenciar no prognóstico dentário. Este estudo teve como objetivo avaliar radiograficamente a condição periapical inicial e a qualidade técnica das obturações dos canais radiculares realizadas pelos residentes em Endodontia da UEM nos anos de 2015 e 2016. Após a coleta de dados e estatística descritiva, realizada por duas examinadoras independentes, empregou-se o coeficiente Kappa para avaliar a concordância entre as mesmas. O teste de qui-quadrado foi utilizado para verificar uma possível associação entre as variáveis sexo, tipo dentário e qualidade da restauração, com a presença de lesão. A maioria dos encaminhamentos para atendimento foram molares (50,5%) e pacientes do sexo feminino (63,2%), com idade média de 39,3 (± 13,3) anos. Uma grande parcela dos dentes foi diagnosticada com necrose pulpar (44,1%), sendo que esta condição abrangeu 74% dos dentes com lesão periapical crônica. A rarefação óssea foi visualizada sobretudo em molares (20%) e dentes sem tratamentos restauradores (43,5%). Por meio do teste de qui-quadrado, houve evidências amostrais de que o sexo (p=0,303), o tipo dentário (p=0,349) e a qualidade da restauração (p=0,070) não estiveram associados à presença da rarefação óssea periapical. Após a finalização dos tratamentos e um total de 233 canais obturados, o limite apical e a condensação da obturação se mostraram satisfatórios em 91% e 100% dos casos, respectivamente. Conclui-se que a presença da lesão periapical crônica não esteve associada ao sexo, tipo dentário ou qualidade da restauração. A obturação dos canais radiculares realizada pelos residentes em Endodontia se mostrou satisfatória. Palavras-chave: Endodontia. Tratamento do Canal Radicular. Periodontite Periapical.