Root Canal Morphology of the Mandibular First Premolars in a Yucatecan Population Using Cone Beam Computed Tomography: An in vitro Study

Abstract

VEGA-LIZAMA, E. M.; TIESLER, V.; CHI-KEB, J. R.; RAMÍREZ-SALOMÓN, M.; HERNÁNDEZ-MEJÍA, A. & CUCINA, A. Root canal morphology of the mandibular first premolars in a Yucatecan population using cone beam computed tomography: An in vitro study. Int. J. Morphol., 36(4):1216-1221, 2018. SUMMARY:A successful endodontic treatment requires knowledge of the internal configuration of dental root canals. Most of the people who live in Yucatan are of Maya origin, characterized by a Mongoloid dental pattern. Because of their ethnicity, variations are expected. The purpose of this investigation is to assess the morphological characteristics and variability of this population. One hundred and five extracted first mandibular premolars of Mexican Maya population were analyzed; the sample was obtained from the Oral Surgery Clinic in the School of Dentistry at the Autonomous University of Yucatan with written informed consent. Analyses were performed by means of Cone Beam Computed Tomography. Vertucci´s Type I was the most prevalent configuration with 51.4 %, but 41 cases (39.1 %) presented a radicular groove and a C-shaped canal configuration. Overall, we documented 1, 2, 3, and 4 root canals. Mandibular first premolars are very variable in the Yucatecan population. The variability and frequency of C-shape is similar to mandibular second molars confirming the importance of the ethnic background for the endodontic treatments. VEGA-LIZAMA, E. M.; TIESLER, V.; CHI-KEB, J. R.; RAMÍREZ-SALOMÓN, M.; HERNÁNDEZ-MEJÍA, A. & CUCINA, A. Root canal morphology of the mandibular first premolars in a Yucatecan population using cone beam computed tomography: An in vitro study. VEGA-LIZAMA, E. M.; TIESLER, V.; CHI-KEB, J. R.; RAMÍREZ-SALOMÓN, M.; HERNÁNDEZ-MEJÍA, A. & CUCINA, A. Root canal morphology of the mandibular first premolars in a Yucatecan population using cone beam computed tomography: An in vitro study.

Prevalence of C-Shaped Canals in Anterior and Posterior Teeth of Iranian Population Using Cone Beam Computed Tomography

“…The current study reported no C-shape canal in premolars, which is consistent with the findings of Hajihassan et al (1) and Vega-Lizama et al (5). On the contrary, Zare Jahromi et al (29) observed C-shaped canal in 0.44% of premolars.…”

“…Therefore, the preoperative recognition of canal morphology and root anatomy leads to more effective cleaning, shaping, and obturation procedures, thereby improving the long-term prognosis of the treatment (1)(2)(3)(4). The root canal system reveals different morphological variations such as C-shaped canal which is reported to cause clinical challenges and to complicate endodontic treatment (5). C-shaped canals were primarily pictured by Keith and Knowles in 1911 and were later defined by Cooke and Cox in 1979 (4,6).…”

“…C-shaped canals were primarily pictured by Keith and Knowles in 1911 and were later defined by Cooke and Cox in 1979 (4,6). This anatomical variation is named C-shaped because of the presence of fin or web connecting the individual canals, leading to a configuration that resembles the letter "C" in a transverse section (4)(5)(6). The failure of Hertwig's epithelial root sheath to fuse on buccal or lingual root surface is claimed to be the main cause of this anatomic variation (4,7,8).…”

Detection of Root Canal Anatomical Variations in Mandibular Premolars in an Egyptian Population

“…This was similar to what was reported by Awawdeh and Al-Qudah (5) in a Jordanian population and Pedemonte et al (16) in Belgian and Chilean populations. This was different from what was reported by Lizama et al (27) in a Mexican population who reported only (50%) of investigated teeth having Single-canal system, and Singh et al (6) in an Indian population who reported significantly higher prevalence of two and three canal-systems. Periapical images were analyzed independently by 5 experienced endodontists having the same academic qualifications after inter-evaluator reliability test that confirmed high level of agreement between all the 5 evaluators with K values ranged from (0.881 to 0.962).…”

Root Canal Morphology of Mandibular Premolars – Cbct Analysis

“…The most commonly observed root morphology was the single rooted mandibular first premolars (80%), followed by 2 (18%), and 3 rooted (2%). It is interesting to note the higher prevalence of two rooted mandibular first premolars in Saudi population compared to egypt (3.2%), Indian (6%) populations(alhadainy, 2013), (Singh and pawar, 2014). The study from the Kuwait population reported a high incidence of two rooted teeth (15%), but it assessed only twenty mandibular first premolars (Zaatar et al, 1997).…”