The <scp>C</scp>‐shaped canal molar: an Endodontic–<scp>A</scp>rchaeological study of the relationships between <scp>M</scp>ayan pre‐Hispanic and contemporary population of Yucatán

Ramírez-Salomón, Marco; Lizama, Elma María Vega; Tiesler, Vera; Alvarado-Cárdenas, Gabriel; López-Villanueva, María Eugenia; Sierra-Sosa, Thelma N.; Cucina, Andrea

doi:10.1111/iej.12255

Cited by 12 publications

(15 citation statements)

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“…The high frequencies seen in the literature were also seen in Asian populations Fan et al, 2008;Khedmat et al;Fan et al, 2012;Yang et al;Gu et al, 2013a,b). The C-shape pattern in premolars concurs with the same morphology recorded in the mandibular second molars, which showed frequencies above 30 % in Prehispanic and modern Maya (Ramírez-Salomón et al 2014), Chinese (Zheng et al, 2011), and Korean (Jin et al 2006) Vertucci (1984) North Americans USA 400 100.0 0.0 0.0 Trope et al (1986) Euro-Americans USA 400 94.5 5.5 0.0 Trope et al (1986) Afro-Americans USA 400 83.8 16.2 0.0 Esponda (1994) Latin-Americans Mexico ->95.0 -0.0 Sert and Bayirli (2004) Caucasoids Int. J.…”

Section: Discussionsupporting

confidence: 83%

“…The modern Maya population in the Yucatecan region (i.e., excluding the modern immigrants from foreign countries as well as from other states in Mexico) have a Mongoloid dental structure, but received Caucasoid and African influence during the last five centuries due to colonization (Cucina & Navarro). While the majority of the traits have retained their original Mongoloid frequency of expression (Ramírez-Salomón et al, 2014;Cucina & Navarro), others have changed as a response to such recent genetic admixture (Cucina & Navarro).…”

Section: Discussionmentioning

confidence: 99%

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

et al. 2018

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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.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

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

et al. 2018

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“…The 35% frequency of C-shaped root canal configurations found among of Yucateans places this population as the second highest incidence of C-shaped canals worldwide. These results provide new and strong evidence that strengthens support for the settlement of the Americas by ancient populations from Northeastern Asia (Ramírez-Salomón et al 2014). The frequency of the C-shaped root canal configurations found among mandibular second molars in Lebanese sample (19.1 %) lies between the 31.5% frequency reported by Yang et al (1988) and the 8 % frequency reported by Cooke and Cox (1979).…”

Section: Ethnic and Geographic Variations On Root Canal Morphologysupporting

confidence: 63%

“…One of these is variations of pulp chamber anatomy, especially in terms of C-shaped canal systems. Such C-shaped canals strongly differentiate and typify ethnic groups from specific parts of the globe, especially Asian individuals, who have a much higher prevalence of C-shaped canals than do members of other populations (Jafarzadeh and Wu 2007;Kirilova and Topalova-Pirinska 2014;Ramírez-Salomón et al 2014). …”

Section: Ethnic and Geographic Variations On Root Canal Morphologymentioning

confidence: 99%

“…However, these analyses are not always possible on the bioarchaeological material, due to the diagenetic changes that occur to bones and teeth after the death of an individual (e.g., Gorostiza et al 2012;Ramírez-Salomón et al 2014). Therefore, discerning analysis inner anatomy of root in terms of canal systems may be helpful in this respect.…”

Section: Ethnic and Geographic Variations On Root Canal Morphologymentioning

confidence: 99%

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Differentiation of root canal morphology – a review of the literature

Przesmycka

Tomczyk

2016

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The morphological diversity of the inner anatomy of root canals in human permanent teeth is an issue mainly described in endodontics research. In recent years, it is a relatively new point in anthropological studies because it varies by sex, geographic and ethnic circumstances. An unusual number of root canals or their specific systems can differentiate populations around the world. The multiplicity of available methods for detecting root canal systems helps to better understand their complexity; however, most cannot be applied to anthropology due to limitations that occur in the bioarcheological material. Thorough knowledge of the heterogeneity and internal anatomy of the root canals supplies numerous classification systems proposed and improved over the years by many authors. A limited number of studies in the anthropological literature and future research will shed light onto the internal tooth morphology in historical populations. The aim of this paper is to describe various classification systems of root canals applied in endodontics. However, due to the often poor state of preservation and damage of archaeological derived remains, it seems that the best method is the approach that is the simplest and least complicated.

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Root and root canal diversity in human permanent maxillary first premolars and first molars in inhabitants from the ancient Middle Euphrates Valley (Syria)

Przesmycka

Tomczyk

Zalewska

et al. 2022

Intl J of Osteoarchaeology

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The morphological and anatomical structure of the roots and root canals of human dentition is very diverse. This means that tooth morphology can effectively differentiate populations and be used in both contemporary and historical research populations. The aim of the study was to investigate whether historical populations from the Middle East showed variation in the number of tooth roots and the morphology of canal systems.The tooth material used for the research was obtained from three sites: Terqa, Tell Masaikh, and Jabel Mashtale (Syria) during archaeological expeditions. The odontological material has been divided into three historical periods: Bronze (2,650-1700 BC), late Roman (200-500 AD) with Islamic (600-1,200 AD), and Modern (1850-1950. The teeth of 31 individuals of both sexes were collected for analysis, with a total of 73 teeth examined. The subjects underwent cone-beam computed tomography (CBCT) analysis.The greatest variation in the number of roots and root canal configurations occurred in the Late Roman and Islamic periods. In addition to the typical number of tooth roots and their characteristic root canal configurations, the presence of less typical morphological forms was noticed in each type of tooth analyzed during this period.This may indicate the influx of new genes and their mixing with local ones, which was reflected in the morphological variability.The presented studies, although they must be continued, already indicate that the analysis of root and canal variability broadens the spectrum of odontological studies conducted on historical populations.

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The C‐shaped canal molar: an Endodontic–Archaeological study of the relationships between Mayan pre‐Hispanic and contemporary population of Yucatán

Cited by 12 publications

References 31 publications

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

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

Differentiation of root canal morphology – a review of the literature

Root and root canal diversity in human permanent maxillary first premolars and first molars in inhabitants from the ancient Middle Euphrates Valley (Syria)

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