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The aim of this study was to determine the prevalence of apical periodontitis and the technical quality of root canal fillings in a Palestinian sub-population.
The panoramic radiographs of 258 patients (142 females, 116 males) attending dental clinics in 2010 were examined to identify the presence of apical lesions associated with any remaining tee...
Contexts in source publication
Context 1
... < 0.05). Table 5 shows the correlation between the radiographic techni- cal quality of root canal fillings and radiographic signs of AP. Root-filled teeth classified as adequately filled represented only 3% of the 508 cases associated with a apical lesion. ...
Context 2
... the last parameter can be scored partially on radiographs ( Weiger et al., 1997). In the current study, evaluation of the technical quality of root canal treatment on the basis of root canal filling length re- vealed that 74.5% of root fillings were executed inadequately (Table 5). These results were worse than those of most other published studies, which showed unacceptable root filling in about 53-69% of cases (De Moor et al., 2000;Loftus et al., 2005;Lupi-Pegurier et al., 2002;Segura-Egea et al., 2004). ...
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Objective
The aim of this study was to evaluate the relationship between length of root canal obturation (RCO) and the presence of apical periodontitis (AP) in different dental groups using cone-beam computed tomography (CBCT) analysis. Materials and methodsA total of 392 roots with canal treatment performed for more than 4 years were evaluated usi...
Introduction
This study assessed the cleaning, shaping, and disinfection abilities of 2 instrumentation systems in molar root canals using a novel correlative analytical approach.
Methods
The root canals from extracted mandibular and maxillary molars with apical periodontitis were pair matched according to anatomic similarities as determined by mi...
Diabetes mellitus is a risk factor for developing periapical infections and increases resistance against pharmacotherapy. Microorganisms are the major cause for periradicular diseases. Peptostreptococcus spp. is the most common bacterial isolate from root canals of primary endodontic infections in diabetic patients. Herbal irrigants are being resea...
Objectives To investigate the posttreatment apical periodontitis (AP) in endodontically treated teeth through a multivariate approach and to analyze the relative importance of quality and type of coronal restoration as predictors of periapical disease.
Materials and Methods The present study sample was drawn within 2-year period from the 1,072 cons...
Apical periodontitis is a disease caused by bacterial invasions through the root canals. Our previous study reported that lithium chloride (LiCl) had a healing effect on apical periodontitis. The aim of this report is to investigate the healing properties and mechanism of lithium ion (Li ⁺ ) for apical periodontitis using rat root canal treatment m...
Citations
... It was observed that 6.37% of the teeth had undergone RCT, slightly exceeding figures reported among Saudi populations but falling within the broader range of comparable studies (2.0%-22.8%) [10,21,24,25]. ...
... [10,22,23,26]. Studies of Belarusian (12%), Greek (13.6%), and Palestinian (15.1%) populations have reported a lower overall prevalence of AP than our study [19,25,27]. This disparity could be attributable to the smaller sample size and male predominance of our study. ...
... This disparity could be attributable to the smaller sample size and male predominance of our study. In addition, we identified more filled root canals and cases of AP in maxillary than in mandibular teeth, in agreement with previous studies [18,25,27]. ...
Objectives: This cross-sectional study evaluated the prevalence of apical periodontitis (AP) and the technical quality of root canal fillings in an adult Kuwaiti subpopulation using cone-beam computed tomography (CBCT) images.
Materials and Methods: Two experienced examiners analyzed 250 CBCT images obtained from Kuwaiti patients aged 15–65 years who attended government dental specialist clinics between January 2019 and September 2020. The assessment followed the radiographic scoring criteria proposed by De Moor for periapical status and the technical quality of root canal filling. Chi-square and Fisher’s exact tests were used for statistical analysis, with significance level set at p < 0.05.
Results: Among the 2,762 examined teeth, 191 (6.91%) exhibited radiographic signs of AP, and 176 (6.37%) had undergone root canal filling. AP prevalence in root canal-treated teeth was 32.38%, with a significant difference between males and females. Most of the endodontically treated teeth exhibited adequate root canal filling (71.5%).
Conclusions: The study demonstrated a comparable prevalence of AP and satisfactory
... Moreover, higher proportion (54.4%) of the treatment was done on the right side of the dental arches, similar to a report by Osadolor et al. 15 The first molar was found to be the most common tooth needing root canal treatment. This observation is similar to previous studies 21, 22 but different to others 24,16 which found that the most frequently root canal treated teeth were the premolars and the central incisors, respectively. The first molar has been cited as the most caries-prone tooth in permanent dentition, perhaps due to its early exposure to the oral environment and its morphologic features being pitted and fissured, bringing plaque and caries formation. ...
Introduction: Root canal treatment (RCT) for permanent teeth involves the use of biologically acceptable chemical and mechanical treatment of the root canal system to promote healing and repair of the peri radicular tissues. The aim of the study was to analyze the reasons and pattern of demand for root canal treatment among patients attending a tertiary care center of Madhesh Province, Nepal. Materials and Methods: This was a descriptive cross-sectional study of patients who received root canal treatment in the Department of Conservative Dentistry and Endodontics, National Medical College, Birgunj, Nepal between September 2022 and February 2023.The demographic and clinical data of patients were recorded and statistical analysis was performed using SPSS version 24. Association between the variables was analyzed by Fischer exact tests. P-value<0.05 was considered as statistically significant. Results: 206 patients who received root canal treatment participated in this study. More mandibular teeth (53.9%) were root-treated compared to maxillary teeth (46.1%). The first molars constituted the most prevalent root-treated teeth (43.7%), followed by the second molars (26.7%) and the central incisors (10.7%). The most common chief complaint was pain (66%) and caries (75.7%) was the most frequently encountered pathology. The association of age category and dental arch with the type of root-treated teeth was statistically significant (p < 0.001 and p <0.004 respectively). Conclusion: Irreversible pulpitis caused by caries was the predominant indication for root canal treatment, with pain being the most common presenting complaint. The demand for treatment was higher in females and among patients within 21-40 years age category. More teeth from the mandibular arch were root-treated while the first molar was the most frequently treated tooth.
... For this reason, periapical lesions are not always visible on X-rays. [5,6,7] X-rays are two-dimensional images of a three-dimensional structure, which means that some features of the examined area may not be su ciently visible. In addition, differences in the density of the bone surrounding the examined tooth and the di culty in obtaining reproducible images can affect the interpretation of this type of tissue imaging. ...
Background
The purpose of this study was a retrospective cross-sectional study of the population of Szczecin (Poland) performed to evaluate the quality of endodontic treatment and the condition of the periapical tissues of permanent teeth based on cone-beam computed tomography images and the influence of the quality of endodontic treatment on the occurrence of periapical lesions.
Methods
The retrospective study included a group of patients who underwent cone-beam computed tomography at the University Dental Clinic of the Pomeranian Medical University in Szczecin. An endodontically treated tooth index (ETTI) was used to evaluate endodontic treatment. Once apical periodontitis was recognised, the size, extent and ratio of adjacent anatomical structures were assessed using the complex periapical index (COPI). The ETTI and COPI indicators mentioned above are combined to form the Periapical and Endodontic Status Scale (PESS).
Results
Analysis of the cone-beam computed tomography images showed that endodontic treatment was performed in 9.9% of the teeth examined, of which 52.7% of the canals were treated correctly, while 28.1% of the root canals were found to be underfilled, 6.8% were overfilled, 9.3% of the root canals were not obturated at all, and in 3.1% of the teeth examined, the filling material was only visible in the pulp chamber. Apical periodontitis was observed in 6% of all teeth examined, while the percentage of teeth following endodontic treatment was 38.5%.
Conclusions
The quality of the endodontic treatment provided to the population of Szczecin is unsatisfactory. Lack of root canal filling homogeneity is a significant risk factor for endodontic treatment failure. Improper endodontic treatment and poor quality of crown restoration after endodontic treatment have an impact on the increased risk of occurrence, size, degree of root coverage and extent of inflammatory periapical lesions in relation to adjacent anatomical structures.
... The study characteristics of the selected articles are demonstrated in Table 1. All the 52 studies in this systematic review were cross-sectional studies and published between 1987 and 2022 [17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68]. This review included studies with a total sample size of 29,613 (males=10,452, females=12,916), and the gender was not reported for 6,245 subjects . ...
... The total number of teeth was 679,414 . These studies were collected from different continents of the world: 35 out of 52 (67%) studies from Europe [18, 21, 22, 27, 31-34, 37, 38, 40-43, 45-49, 51, 53-60, 62-68], seven (13%) studies from Asia [17,19,26,28,36,39,50], five (10%) studies from Africa [20,23,24,30,44], two (4%) studies from North America [52,61], two (4%) studies from South America [29,35], and one (2%) study from Australia [25]. Regarding the imaging technique used, seven out of 52 (13.5%) studies used CBCT only [17-19, 21, 27, 32, 35], 20 (38.5%) studies used orthopantomogram (OPG) only [20, 25, 26, 28, 31, 33, 36-39, 43, 45, 48, 49, 54, 56, 58, 62, 64, 65], 16 (31%) studies used periapical radiographs only [29, 30, 40, 41, 44, 47, 50, 51-53, 55, 59, 61-68], and nine (17%) studies used both OPG and periapical radiographs [22-24, 34, 42, 46, 57, 60, 63]. ...
... In Asian countries, two studies showed 246 and 1,559 teeth with PARL in the Saudi population [17,26]. One study in each of the following populations showed the following values: 1,522 teeth with PARL in the Japanese population [50]; 978 teeth with PARL in the Palestinian population [36]; 865 teeth with PARL in the Indian population [28]; 856 teeth with PARL in the Jordanian population [39]; and 294 teeth with PARL in the Iraqi population [19]. ...
Cross-sectional studies assess a population’s health state and the prevalence of diseases or treatments. Few systematic reviews regarding the prevalence of periapical radiolucency (PARL) and nonsurgical root canal treatment (NSRCT) were conducted in the last decade. The goal of this study was to collect and review all updated and available cross-sectional studies that focus on the prevalence of both PARL and NSRCT in adult populations. It involves a systematic literature review of cross-sectional studies on the prevalence of PARL and NSRCT published from 1987 to 2022 in PubMed, Google Scholar, Web of Science, and Scopus with specific keywords used in the search process. A total of 52 articles were included in this systematic review. The majority of the included articles were from different populations. The overall prevalence of teeth with PARL was 43,522 (6.40%), while the prevalence of NSRCT teeth was 52,149 (7.67%). On the other hand, the
overall prevalence of PARL in teeth that have received endodontic treatment and teeth that have not received endodontic treatment were 22,110 (3.25%) and 21,412 (3.15%), respectively. A meta-analysis was not performed due to underreporting of publication bias and the high degree of heterogeneity between studies. The overall risk of bias assessment revealed a low risk of bias in 25 (48%) of the included studies. The prevalence of NSRCT was higher at 7.67%, followed by PARL at approximately 6.40%. However, future studies are recommended to investigate the prevalence of both PARL and NSRCT in different patient
populations.
... Hasil yang sama juga didapatkan pada penelitian yang dilakukan oleh Rebecca et al. 11 Tidak jauh berbeda dengan penelitian oleh Raed et al yang melaporkan bahwa PAK ditemukan paling banyak pada kelompok usia 25-34 tahun. 13 Perubahan usia memiliki hubungan kompleks terhadap kondisi dari jaringan pulpa gigi. Kondisi sistemik yang berpengaruh sejalan dengan pertambahan usia mempengaruhi perawatan endodontik yang dilakukan yang dapat menyebabkan PAK. 14 PAK berhubungan dengan infeksi pulpa yang dapat menyebar ke seluruh tubuh; kondisi patologis endododontik merupakan hal yang serius. 2 Meskipun proses infeksi periapikal menghasilkan berbagai respon jaringan lokal yang mungkin bertujuan untuk membatasi penyebaran elemen infeksius, PAK tidak secara ekslusif menjadi penyebab penyebaran infeksi lokal. ...
Apical periodontitis is primarily a consequences of root canal infection, be marked with inflammation and tissue destruction pe-riradiculars resulting from interactions between microbial factors and the host immune response. This study is aimed to evalu-ate the prevalence of chronic apical periodontitis (CAP) inpatients of Hasanuddin University Dental and Oral Education Hospital during the Covid-19 pandemic period in 2021. The study was conducted with cross-sectional design. Secondary data in the form of accumulation of the number of patients who came to undergo radiographic examination aged over 12 yearswere then grouped into CAP and non-CAP. Data were analyzed and chi square test was performed to assess the relationship between CAP with gender and age (p<0.05). A total of 222 data were obtained, of which 54% were women. The number of samples who expe-rienced CAP were 33.3% and thelargest age group was 21-30 years (29.7%). There was no significant difference between CAP and gender (p>0.05), but there was a significant difference between CAP and age (p<0.05). CAP depends on the dental condi-tion of patients who are not treated. It was concluded that prevalence of CAP who came for treatment and was detected using intraoral radiography at RSGMP Unhas were 33.3% and most of them were female and in the age group of 21-30 years.
... Forty-five studies were classified as moderate risk of bias (Ahmed et al., 2017;Al-Omari et al., 2011;Alrahabi & Younes, 2016;Archana et al., 2015;Asgary et al., 2010;Bürklein et al., 2020;da Paes Silva Ramos Fernandes et al., 2013;Da Silva et al., 2009;De Cleen et al., 1993;De Moor et al., 2000;Di Filippo et al., 2014;Dugas et al., 2003;Gencoglu et al., 2010;Georgopoulou et al., 2005;Gulsahi et al., 2008;Hebling et al., 2014;Hussein et al., 2016;Huumonen et al., 2012;Imfeld, 1991;Jersa & Kundzina, 2013;Jiménez-Pinzón et al., 2004;Kabak & Abbott, 2005;Kalender et al., 2013;Kamberi et al., 2011; F I G U R E 3 Forest plot of the studies that have calculated the percentage of people with at least one root filled teeth (RFT) in the total sample. Kielbassa et al., 2017;Kirkevang et al., 2001Kirkevang et al., , 2006Lemagner et al., 2015;Lupi-Pegurier et al., 2002;Marques et al., 1998;Matijević et al., 2011;Mukhaimer et al., 2012;Özbaş et al., 2011;Peters et al., 2011;Petersson et al., 1989;Rocha et al., 2012;Segura-Egea et al., 2008;Sidaravicius et al., 1999;Skudutyte-Rysstad & Eriksen, 2006;Terças et al., 2006;Timmerman et al., 2017;Touré et al., 2008;Tsuneishi et al., 2005;Ureyen Kaya et al., 2013;Van der Veken et al., 2017;Zhong et al., 2008), and only two of the 74 included studies were classified as low risk of bias (Huumonen et al., 2017;Ödesjö et al., 1990). ...
Background:
The prevalence of root filled teeth (RFT) worldwide will inform about the amount of clinical activity of dentists dedicated to treat endodontic disease.
Objectives:
To carry out a systematic review with meta-analysis answering the following question: What is the prevalence of RFT around the world? The percentage of people with at least one RFT was also investigated.
Methods:
A systematic review including population-based studies using the following databases: PubMed, EMBASE and Scielo. Studies related to prevalence of RFT were included. The outcome of interest of the study was the prevalence of RFT. The meta-analyses were calculated with the Open Meta Analyst software to determine the global prevalence of RFT. Subgroups analyses were performed comparing geographical distribution, radiographic method and year of the study (classified in 20th or 21th century). The prevalence of people with at least one RFT was also analysed.
Results:
Seventy-four population-based studies fulfilled the inclusion criteria. Twenty-eight, forty-four and two studies reported high, moderate, and low risk of bias, respectively. No obvious publication bias was observed. Prevalence of RFT were estimated with 1,201,255 teeth and 32,162 patients. The calculated worldwide prevalence of RFT was 8.2% (95% CI = 7.3 - 9.1%; p < 0.001). The global prevalence of people with at least one RFT was 55.7% (95% CI = 49.6 - 61.8%; p < 0.001). In 20th century the prevalence of RFT was 10.2% (95% CI = 7.9 - 12.5%; p < 0.001), whereas in the 21st century the overall calculated prevalence of RFT was 7.5% (95% CI = 6.5 - 8.6%; p < 0.001). Brazilian people (12%) and the European population (9.3%) showed the highest prevalence of RFT. In Europe, 59.6% (95% CI = 52.4-66.8%) of people has at least one RFT.
Conclusions:
This review showed that RCT is a very common therapy throughout the world. More than half of the studied population have at least one RFT. A limitation of the present study is that most of the studies did not consider random sampling for population selection.
... Some studies indicate that the worldwide prevalence of AP is over 60% [23,[25][26][27], which points out to a great number of people at risk of CHD as a result of elevated CRP levels induced by AP. Although endodontic treatment is the most appropriate approach to eradicate AP, cross-sectional studies have suggested that more than 50% of endodontically treated teeth in many countries remain associated with AP [13,[36][37][38]. This is directly linked to educational factors as well as technical and technological limitations in the eld, and associated with the lack of access to adequate treatments by many populations around the world. ...
Objectives This study explores the potential relation between apical periodontitis (AP) and C-reactive protein (CRP) levels, a laboratorial surrogate of systemic inflammation.
Material and Methods 144 consecutive patients were selected, after exclusion criteria, from a University Dental Clinic. A full mouth series of periapical radiographs was taken, and patients were allocated to two groups (n = 77): AP-present or AP-absent. In the AP-present group, the number of affected teeth/per patient was counted. Patient’s CRP levels were immediately measured, using the Quickread CRP®. CRP cut-off level to indicate for systemic consequences was set at ≥ 8mg/L, and CRP readings were categorized at or below this level for statistical evaluation. A Chi-square test verified whether the frequencies of CRP levels (< 8 mg/L and ≥ 8 mg/L) differed between the groups with and without AP. The odds of an AP-positive patient to present ≥ 8mg/L CRP levels was also calculated. A Spearman correlation verified whether the number of affected teeth influence the CRP levels in the AP-present group.
Results The frequency of AP-free patients reading high CRP levels (≥ 8 mg/L) (11.68%) is significantly lower compared to the AP-present (25.97%) (Chi-square, X² = 5.1404, P = 0.023). AP-positive patients displayed 2.65-fold higher risk for CRP ≥ 8 mg/L (OR = 2.65, 95%CI: 1.12–6.28). There was no correlation between the number of AP-affected teeth and the two categories of CRP blood levels (Spearman, rs=0.129, P = 0.26).
Conclusions A potential systemic impact of endodontically compromised teeth has been found since AP-positive patients display 2.65-fold higher odds of increased CRP levels.
Clinical Significance
Patients with apical periodontitis present about 2.6 times odds to display elevated systemic levels of C-reactive protein, a serum marker that may be considered a risk factor to generate coronal heart diseases.
... In the analysis of the quality of endo treatment, we found that 778 (38.2%) were adequately treated, and 1256 (61.8%) were inadequately treated. The result is similar to Mukhaimer et al (Mukhaimer et al., 2012), where they found the majority of endodontically treated teeth (74.5%) were performed inadequately and Mirjana et al (Ilic et al., 2014) 55.9%. Our study matches with the general range (30-50%) of the most other published studies summarized by Connert T et al. in their discussion (Connert et al., 2019). ...
... However, 72.2% (Ilic et al., 2014) is closer to the reported study. There is sufficient evidence to prove a significant correlation between the presence of AP and poorly executed root canal fillings (Balto et al., 2010;Mukhaimer et al., 2012;Ilic et al., 2014). Of 179 endodontically treated teeth in a local study, 68 (37.99%) had periapical lesions, and the presence of severe curvatures was more significant among under-filled teeth (P < 0.001). ...
... In our study, digital ortopantomographies (OPG) were used for standard assessment techniques for evaluation of apical status and quality of root canal, likewise to the reported studies (Dydyk and Hrynyshyn, 2020;Eriksen et al., 2020;Balto et al., 2010;Mukhaimer et al., 2012;Ilic et al., 2014). Though the OPG technique is considered effective for assessing rootfilled teeth in even limited resource settings, an incorrect or inefficient assessment of OPG may be a misleading cause of endodontic treatment failure. ...
Abstract Introduction: The main cause for developing periapical lesions (PA) is the root canal
infection. The mentioned causes may play a role in not controlling it but are not a ‘‘true” cause.
Objective: To determine apical status and prevalence of endodontic treated tooth using radio�graph assessment in relation to quality of root canal treatment and clinical factors among Saudi
adults in the Eastern province.
Patients and methods: This prospective case series study included 2161 patients who received
root canal treatment (RCT) at Dammam Specialized Dental Center, Dammam Medical Complex,
Ministry of Health, Saudi Arabia, between October 21, 2019 and April 22, 2020, after getting ethical
approval from the Institutional Research Board (IRB). Saudi natives of either gender, age � 18,
with at least one fixed bridge or single dental crown evaluated on a clear, high-quality radiography
image were recruited for the study. To determine the periapical state of root canal-filled teeth, the
’periapical index’ (PAI) was used. All pertinent patient information was analyzed in SPSS verion-20
(IBM product, Chicago)
... In the present study, middle and old age patients show decrease in the total number of RCTs, and this is in contradiction with other studies, [11,18] where they found increase in endodontic treatment with aging, because of longer exposure to caries and function. [8] This difference might be, either because of attrition there is reduced pits and fissures on the occlusal surface and thus there is reduction in pulp disease sequel to caries, [14] or because patients prefer extraction instead of RCT, which might be because patients find it more costly [19] or not important for aesthetics. ...
Introduction: This study was done with the objective of determining the frequency and distribution of teeth requiring endodontic treatment in Saudi Arabia subpopulation. Materials & Methods: A retrospective, cross-sectional study was done in the Department of Clinical Sciences, Dental Program, Ba erjee Medical College, Jeddah, Saudi Arabia. Patient’s data (age, gender, arch and type of tooth involved) that underwent root canal treatment from 1st January 2018 to 31st December 2018 was collected and analyzed. Results: Out of 3731 patients, 538 teeth required endodontic treatment. More male patients undergone root canal treatment as compared to females, and most root canal treatments were done in young adult patients. Most of the teeth that required root canal treatment were posteriors. Conclusion: This study showed that root canal treatment was done more in males, in mandibular posteriors and in young adult patients.
... Currently, several periapical periodontitis prevalence studies based on imaging assessments have been conducted. The overall reported pathology proportions ranges from 1.1% in Norway (20) to 15.1% in Palestine (21), and from 15.3% in Finland to (22) to 73.9% in Turkey (23) for root canal filled teeth, with all four studies relying on panoramic radiograph assessments. ...
... According to the reported data, the Portuguese nationwide overall prevalence of periapical lesions (10.0%) corroborates with the results reported in previous studies carried out in Switzerland (8.5%) (41), Croatia (8.5%) (42), Japan (9.4%) (43), Jordan (11.6%) (44) and Belarus (11.7%) (16). However, this percentage is lower compared with the results from Mukhaimer et al. (21) in Palestine (15.1%) and Oginni et al. (45) in Nigeria (14.4.%), but higher than the proportions documented by Skudutyte-Rysstad & Eriksen (20) in Norway (1.1%) and Ureyen Kaya et al. (36) in Turkey (1.2%). Additionally, the results of the present study showed that the prevalence of periapical lesions in root canal filled teeth was 54.0%, which is a lower percentage when compared to the one from Morocco (66.8%) (46) and Spain (64.5%) (8) but considerably higher than the reported prevalence in Finland (15.3%) (22). ...
... Additionally, the results of the present study showed that the prevalence of periapical lesions in root canal filled teeth was 54.0%, which is a lower percentage when compared to the one from Morocco (66.8%) (46) and Spain (64.5%) (8) but considerably higher than the reported prevalence in Finland (15.3%) (22). Table 6 and Figure 3 summarize the previous literature regarding the prevalence of periapical lesions (7,9,10,15,16,(20)(21)(22)(23)(24)(25). Considering the imaging methodological differences, the comparison between studies should be made with caution. ...
Objective:
Apical periodontitis develops when bacteria, or their by products, migrate from the infected root canal system space to the surrounding apical tissues. The objective of the present multi-center cross-sectional study was to analyze the prevalence of lateral radiolucency, apical root resorption and periapical lesions in 7 districts of Portugal using cone-beam computed tomographic (CBCT) assessment.
Methods:
A total of 1,249 CBCT scans, from 11 dental clinics, were screened. Data regarding 22,899 teeth was included. For each tooth the recorded data was the presence of lateral radiolucency, apical root resorption, periapical lesions, previous root canal treatment, missed root canals, length of root canal filling (short, good or overfilling) and type of coronal restoration (intact tooth, non-restored, filling or crown). Differences between districts were tested using chi-squared. A P<0.05 was considered significant.
Results:
The proportion of lateral radiolucency ranged between 0.0% (Aveiro, Braga and Coimbra) and 0.9% (Lisbon), while the prevalence of apical root resorption ranged from 0.0% (Braga and Coimbra) to 3.0% in Setubal. The nationwide proportion of lateral radiolucency was 0.4%, while for apical root resorption was 1.1%. The prevalence of periapical lesions varied from 4.1% (Braga) and 13.0% (Lisbon) with a nationwide proportion of 10.0%. Significant differences were noted between districts (P<0.05).
Conclusion:
The prevalence of lateral radiolucency and apical root resorption were low in all districts. Root canal filled teeth were associated with higher periapical lesions proportions than non-treated teeth. Independently of the assessed district, the periapical status may be influenced by both quality of the endodontic treatment and coronal restoration.
