Worldwide Prevalence of a Lingual Canal in Mandibular Premolars: A Multicenter Cross-sectional Study with Meta-analysis
| Autor: | Yuerong Zhang, Fábio Santiago, Carlos Boveda, Luiza Berti, Christian Nole, Ruben Rosas Aguilar, Marco Aurélio Versiani, Daniel Flynn, Walter Vargas, Hussein C. Seedat, Moataz-Bellah A.M. Alkhawas, Peter Parashos, Jorge N.R. Martins, Adam Monroe, Jojo Kottoor, Gianluca Plotino, Zaher Altaki, Magnús F. Ragnarsson, Imran Cassim, Hussam Alfawaz, Jose Antonio Gonzalez, Murilo von Zuben, Emmanuel João Nogueira Leal Silva, Hani F. Ounsi, Antonis Chaniotis |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Male Intraclass correlation Cross-sectional study Root canal Dentistry Mandible 03 medical and health sciences 0302 clinical medicine Cohen's kappa stomatognathic system Statistical significance otorhinolaryngologic diseases medicine Premolar Prevalence Humans Multicenter Studies as Topic Bicuspid Tooth Root General Dentistry business.industry 030206 dentistry Odds ratio Cone-Beam Computed Tomography Middle Aged 030104 developmental biology medicine.anatomical_structure Cross-Sectional Studies Female sense organs Dental Pulp Cavity business Kappa |
| Zdroj: | Journal of endodontics. 47(8) |
| ISSN: | 1878-3554 |
| Popis: | The presence of multiple root canals is an important morphologic aspect of mandibular premolars. This study aimed to perform a worldwide analysis on the prevalence of a lingual canal in mandibular premolars and to evaluate its influence on patients' demographics in 23 countries using cone-beam computed tomographic images.Observers from 23 countries were instructed to evaluate cone-beam computed tomographic images of 300 first and 300 second premolars (13,800 teeth) regarding the presence of a lingual canal, canal configuration, and data related to patients' ethnicity, age, and sex following a standardized screening methodology. Intra- and interrater evaluations were performed using the Cohen kappa test and intraclass correlation coefficient. Proportion and odds ratio forest plots were calculated in order to compare groups. Statistical significance was set at 5%.Both kappa and intraclass correlation coefficient values were above 0.60, and the percentage of agreement was 94.9% (first premolar) and 97.8% (second premolar). A significant statistical difference was observed between the worldwide proportion of a lingual canal in mandibular first (23.8%; range, 12.0%-32.7%) and second (5.3%; range, 1.0%-15.3%) premolars (P.05). Asians and patients over 60 years old were associated with the lowest proportions of a lingual canal (P.05), whereas Africans and younger groups were associated with the highest proportions (P.05). The prevalence of a lingual canal in males (27.9%) was higher than females (20.0%) for the first premolar only (P.05). Males were associated with 1.533 and 1.597 higher odds of presenting a lingual root canal in the first and second premolars, respectively.The worldwide proportion of a lingual root canal was 23.6% and 5.3% for the first and second premolars, respectively. Ethnicity, geographic region, age, and sex had an influence on the outcomes. |
| Databáze: | OpenAIRE |
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