Frecuencia de agenesias de terceros molares: relación con el tamaño mandibular

Cristian Julián Botina; Luisa Fernanda Rodríguez; Eugenia Catalina Cepeda; Diego Fernando Zabala; Gretel González Colmenares

Frequency of third molar agenesis: relation to jaw size : relación con el tamaño mandibular

Research Articles

Cristian Julián Botina Ver Biografía

Universidad Antonio Nariño, Sede Bogotá

Luisa Fernanda Rodríguez Ver Biografía

Universidad Antonio Nariño

Eugenia Catalina Cepeda Ver Biografía

Universitaria Colegios de Colombia.

Diego Fernando Zabala Ver Biografía

Fundación Universitaria San Martín

Gretel González Colmenares Ver Biografía

Universidad Nacional de Colombia.

Introduction: A research article derived from the project entitled “Third Molar Agenesis in Patients at the Orthodontia Postgraduate Clinics at the Universidad Antonio Nariño” carried out in 2011 by the Oral Health Research Group at that same university. Some authors believe that third molar agenesis may be evidence of evolutionary trends, showing a decrease in the size of the jaws and the number of teeth, but in some studies this has been questioned. The objective of this research was to determine the frequency of agen- esis of third molar teeth and its relation to mandibular length and width.

Materials and method: A descriptive study was performed; our sample included the medical records of 220 patients, between the ages of 14 and 20, with study models and panoramic and lateral x-rays. Third molar agenesis was recorded and the mandibular length was taken using cephalometric tracing of the lateral X-ray; the mandibular width transversal measurement was taken using the models.

Results: The frequency of third molar agenesis was 24.1%. The most frequent agenesis involved just one third molar (10.9%). The most frequent agenesis quadrant was the right lower quadrant. Mandibular length and transverse length did not differ in individuals with and without third molar agenesis.

Conclusions: The results show that the frequency of third molar agenesis is within the reported percentages. There is no significant relationship between man- dibular size and third molar agenesis.

Keywords: agenesis, frequency, mandibular, third molar.

Bartolomé B. Desarrollo y agenesia del tercer molar en una población de niños y adolescentes españoles. [Tesis doctoral]. Madrid: Universidad Complutense de Madrid; 1994.

Lago L. Exodoncia del tercer molar inferior: Factores anatómicos, quirúrgicos y ansiedad dental en el postoperatorio.

[Tesis Doctoral]. Galicia: Universidad de Santiago de Compostela; 2001.

McNamara C, Foley T. Multidisciplinary management of hypodontia in adolescents: case report. J Can Dent Assoc. Oct 2006; 72(8): 740‑6.

Arboleda LA, Echeverri J, Restrepo LA, Marín, ML, Vásquez G, Gómez JC et al. Agenesia dental. Revisión bibliográfica y reporte de dos casos clínicos. Rev Fac Odontol Univ Antioq. 2006; 18(1): 47‑54.

García-Hernández F, Beltrán VJ. Agenesia del tercer molar en una etnia originaria del norte de Chile: Atacameños o Lican Antai. Int J Morphol. 2008; 26(3): 583‑90.

Philip J. Patología oral y maxilofacial contemporánea. Madrid: Harcourt Brace; 1998; p. 5‑6.

Sarmiento P, Herrera A. Agenesia de terceros molares en estudiantes de Odontología de la Universidad del Valle entre 16 y 25 años. Colombia Médica. 2004; 35(3) Supl 1: 5‑9.

Proffit WR, Fields HW. Ortodoncia contemporánea, teoría y práctica. 3a ed. Madrid: Harcourt; 2001.

Moyers, RE. Manual de Ortodoncia. 4a ed. Buenos Aires: Médica Panamericana; 1992.

Joshi M. A study of dental occlusion in nasal and oronasal

breathers in maharstrian children. Journal Indian Dent. 1964: 36.

Ricketts RM. Respiratory obstruction syndrome. Am J Orthodontics. Jul 1968; 54(7): 495‑507.

Harvold EP, Tomer BS, Vargervik K, Chierici G. Primate experiments on oral respiration. Am J Orthodontics. Abr 1981; 79(4): 359-72.

Pascual A. Análisis funcional de la respiración. Revista Española de Ortodoncia. 1978; 8: 123‑46.

Torre H, Menchaca PN, Guajardo R, Arizpe A y Mercado R. Obstrucción de vías aéreas y crecimiento cráneo-facial. Ciencia uanl. 2002; 5: 328‑35.

Moss ML, Salentijn L. The primary role of functional matrices in facial growth. Am J Orthod. Jun 1969; 55(6): 566‑77.

Enlow D y Hans MG. Crecimiento facial. México DF: Editorial McGraw-Hill Interamericana; 1998.

Figún ME, Garino RR. Anatomía odontológica funcional y aplicada. 2a ed. Buenos Aires: El Ateneo; 1992; p.341-2.

Pamplona J. La mandíbula y el tercer molar. [Tesis doctoral].

Granada: Universidad de Granada; 1983, p. 44.

García-Hernández F, Beltrán VJ. Agenesia del tercer molar en una etnia originaria del norte de Chile: Atacameños o Lican Antai. Int J Morphol. 2008; 26(3): 583‑590.

Peck S, Peck L, Kataja M. Site-specificity of tooth agenesis in subjects with maxillary canine malpositions. Angle Orthod.1996; 66: 473-6.

Larmour CJ, Mossey PA, Thind BS, Forgie AH, Stirrups DR, Colin J. Hypodontia- a retrospective review of prevalence and etiology. Part 1. Quintessence Int. Abr 2005; 36(4): 263‑70.

Vastardis H. The genetics of human tooth agenesis: new

discoveries for understanding dental anomalies. Am J Orthod Dentofacial Orthop. Jun 2000; 117(6): 650‑6.

Frequency of third molar agenesis: relation to jaw size: relación con el tamaño mandibular. (2014). Revista Nacional De Odontología, 8(15), 52-56. https://revistas.ucc.edu.co/index.php/od/article/view/272

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Frequency of third molar agenesis: relation to jaw size : relación con el tamaño mandibular

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