Relationship between the shape of the upper central incisors and the facial contour in dental students. Lima. Peru.

Miguel Angel Cabello, Sergio Alvarado

Abstract


Objective: To determine if there is a relationship between the shape of the face and the shape of the right upper central incisor in accordance with "The law of harmony" proposed by Williams. Materials and methods: this study was observational analytical cross-type, we selected a sample of 124 students of both sexes between 17 and 28 years of age, which was determined facial biotype and the shape of the right upper central incisor, by means of a direct method and other photographic. By the direct method was clinically evaluated the height and the facial width as well as also the proximal contours of the incisor using a Vernier digital and by the photographic method were strokes the images taken using the software of Adobe Photoshop 5.0. Results: For the direct method the relationship, or correlation between the shape of the face and the shape of the incisor was a 43.5% sample (n=124) (p=0.006<0.05 IC 95%). By the photographic method concordance between the shape of the face and the shape of the incisor or the relationship was in a 41.1% sample (n=124) (p=0.037<0.05 IC 95%). Facial biotype more frequently with the direct and photographic method was the dolichofacial in a 61.3% and 71% respectively. The shape of the tooth more frequently with the direct and photographic method was the ovoid on a 55.6% and 51.6% respectively. Conclusion: The results do not confirm "The law of harmony" proposed by Williams, therefore when choosing the most suitable anterior tooth, should be considered experience and the critical sense of professional as well as the wishes of the patient in order to achieve a good aesthetic result.


Keywords


Esthetics; tooth form; facial index; upper central incisor; dental aesthetics.

References


Becerra G, Becerra N, Jiménez M, Medina V, Tamayo L, Gómez S. Algunos factores relacionados con la estética dental: una nueva aproximación. Rev Fac Odontol Univ Antioq 2015;26(2):271-91.

Paranhos R, Jóias P, Velasco L, Bérzin F, Daruge E. Prevalence of the different maxillary central incisor shapes in individuals with natural normal occlusion. Braz J Oral Sci 2010;9(2):104-07.

Weber B, Fuentes R, García N, Cantín M. Relaciones de Forma y Proporción del Incisivo Central Maxilar con Medidas Faciales, Línea Mediana Dentaria y Facial en Adultos. Int J Morphol 2014;32(3):1101-7.

Tay L, Herrera D, Bernabé E, Lagravere M, Delgado L. Esthetic perception towards different combinations of facial contours and upper incisor shape. Braz J Oral Sci 2009;8(4):193-96.

Paranhos L, Souto C, Alves R, Daruge E, Torres F. Correlation between maxillary central incisor crown morphology and mandibular dental arch form in normal occlusion subjects. Braz Dent J 2012;23(2):149-53

Mariano R, Marggiorini M, Koichiro A, Kairalla S, Torres F, Paranhos L. A forma do incisivo central superior na visão da literatura. Rev Fac Odontol Univ Passo Fundo 2011;16(3):337-41.

Fonollosa J. Integración y estética en rehabilitaciones completas acrílicas. Gac Dent 2010;215:152-71

Frush J, Fisher R. How dentogenic restorations interpret the sex factor. J Prosthet Dent 1956;6:160-72.

Williams J L. A new classification of human tooth forms with a special reference to a new system of artificial teeth. Dent Cosmos 1914;56: 627.

Mahmoud L. Face central incisor form matching in selected south Asian population. Sci Res Essays 2012;7(5):616-20.

Rodríguez P, Martínez J, Celemín A. Estudio entre las formas y proporciones del contorno facial y del incisivo central. Gac Dent 2011;90(11):228.

Mavroskoufis F, Ritchie G M. The face-form as a guide for the selection of maxillary central incisors. J Prosthet Dent 1980;43(5):501-5.

Varjâo M, Sualdini S, Russi S, Neudenir J. Correlation between maxillary central incisor form and face form in 4 racial groups. Qintessence Int 2006;31(10):767-71.

Peixoto F, Freitas N, Filgueiras D, Ferraz M, Araújo W. Digitized study of the correlation between the face and tooth shapes in young adult individuals. Braz J Oral Sci 2007;22(6):1383-86.

Ibrahimagi L, Jerolimov V, Celebic A, Carek V, Baucic I, Knezovi D. Relationship Between the Face and the Tooth Form. Coll Antropol 2001;25(2):619–26.

Pavankumar R, Dhanyakumar H. A clinical study to evaluate the correlation between maxillary central incisor tooth form and face form in an Indian population. J Oral Sci 2012;54(3):273-78.

Vandenbroucke J, Von E, Douglas G, Gotzsche P, Mulrow C, Pocock S, Poole C, Schlesselman J, Egger M. Mejorar la comunicación de estudios observacionales en epidemiología (STROBE): explicación y elaboración. Gac Sanit 2009.

World Medical Association. World Medical Association Declaration of Helsinki: Ethical Principles for Medical Research Involving Human Subjects. J Am Med Assoc. 2013. En prensa.

Mayoral J. Morfología Craneofacial. España: Laboral; 1986.

Halazonetis D. Estimated natural head position and facial morphology. Am J Orthod Dentofacial Orthop 2002;121(4):364-68.

Companioni A, Torralbas A, Sánchez C. Relación entre la proporción áurea y el índice facial en estudiantes de Estomatología de La Habana. Rev Cubana Estomatol 2010;47(1):50-61

Posada L, Roldan A, Gómez A, Valencia P. Estudio descriptivo de los rasgos dentales y faciales en varios pacientes de diferentes clínicas de la ciudad de Medellín. Rev CES Odont 2003;16(1):13-20.

Alvarado S, Delgadillo J, Petkova M, Vilchez E, Munive A, Gloria W, Bravo S, Fernández M. Estudio de la forma y tamaño de los incisivos superiores de los estudiantes de odontología según el principio embriogenético de Gerber. Odontol Sanmarquina 2013;16(1):17-24

Bustamante F, Olave E, Binvignat O. Estudio de Índices Faciales en alumnos de la Universidad de La Frontera, Chile. Int J Morphol 2011;29(4):1335-40

Acosta D, Porras A, Moreno F. Relación entre la forma del contorno facial, los arcos dentarios e incisivos centrales superiores en estudiantes de odontología de la Universidad del Valle en Cali. Rev Estomatol 2011;19(1):8-13.

Oliveira P, Mantovani F, Martao F, Tarkany R. Study of the morpho-dimensional relationship between the maxillary central incisors and the face. Braz Oral Res 2011;25(3):210-16.


Full Text: PDF

Refbacks

  • There are currently no refbacks.




Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

Corresponding: Facultad de Odontología, Universidad de Concepción, Chile. Roosevelt 1550, Concepción, Chile. Phone +56-41-2204232 - Fax +56-41-2243311- Mailbox 160-C, Concepción, Chile. E-mail journal@joralres.com.