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3 results on '"Gamarra-Díaz, Luis Gustavo"'

1. Relación entre el tipo de arco de sonrisa y el biotipo facial en jóvenes peruanos.

Author

Gamarra-Díaz, Luis Gustavo, Chonlón-Eilleen, Cachay, and Rojas-Padilla, Sandra

Abstract

Introduction. The determination of the facial biotype and smile arc, is part of the orthodontic diagnosis, and both are important in the treatment plan. The human body is a set of proportions, so it is necessary to know the relationship between the characteristics of the smile and the facial pattern, since these factors should be considered at the time of restoring the anterior sector, in addition the facial biotype will determine the plan of the restorative treatment. Objective. The study determined the relationship between the type of smile arc and facial biotype in university students. Methods. It was considered a probabilistic sample of 191 students who met the selection criteria. Two frontal photographs were used, one where the patient had to smile and another without smiling. The qualitative data were analyzed using the Chi square test to determine significant differences between the smile arc and the facial biotype. Results. According to the smile arc, 41% (n = 79) of the students presented an arc of a consonant smile, and 59% (n = 112) a non-consonant smile arc. According to the facial biotype it was found that 33% (n = 63) of the students presented a brachifacial biotype, 38% (n = 72) a mesofacial biotype, and 29% (n = 56) a dolichofacial biotype. With respect to the relationship between the smile arc and the facial biotype in students, it was concluded that in the brachifacial biotype, 46% presented an arc of consonant smile and 54% no consonant, in the mesofacial biotype 38% an arc of consonant smile and 62% non-consonant, and in the dolichofacial biotype 41% an arc of a consonant smile and a 59% non-consonant. Conclusions. There is no statistically significant relationship between the smile arc and the facial biotype (p = 5.991). [ABSTRACT FROM AUTHOR]

Published
2019

2. Resistencia a la fuerza de cizallamiento de tres resinas fotopolimerizables usadas para adherir brackets. Estudio in vitro

Author

Gamarra Díaz, Luis Gustavo and Ríos Caro, Teresa Etelvina

Subjects
Resistencia al corte, Resinas compuestas, In vitro, Soportes ortodóncicos
Abstract

The present research aimed to compare the resistance in vitro three light-curing resins used to attach brackets, by shear force. The sample consisted of 39 healthy premolars recently extracted, which were divided into three groups. We proceeded to attach metal brackets for each group using one of the three light curing resins: Transbond XT (3M), OrthoCem (FGM) and Heliosit Orthodontic (Ivoclar / Vivadent). Then each group was applied mechanical shear test using a universal testing machine with high precision and digital technology, ideal for the present study, Instron ® 8801 mark. Data were entered and processed with SPSS version 18.0. Considering the lack of homogeneity of variances of the study groups was used as an alternative test, range test Kruskal - Wallis. The values of resistance to shearing force were: Transbond XT (3M) 9.26 ± 0.55 MPa, CV: 5.9%; Orthocem (FGM) 7.45 ± 1.31 MPa, CV: 17%; Heliosit Orthodontic (Ivoclar / Vivadent) 4.44 Mpa ± 0.40, CV: 9.1%. When comparing the average effect of resistance to shear force of the three resins, the Kruskal - Wallis test yields a value H = 29.26 indicating a highly significant statistical difference (p

Published
2013

3. Programa sistematizado de arco de sonrisa y biotipo facial para el diagnóstico ortodóntico en Estudiantes de Estomatología de la Universidad Señor de Sipán, Chiclayo

Author

Cachay Chonlón, Eilleen Sheyla Ivonne and Gamarra Díaz, Luis Gustavo

Subjects
Diagnóstico, Estética, facial, Sonrisa, purl.org/pe-repo/ocde/ford#3.02.14 [http]
Abstract

El presente estudio tuvo como objetivo elaborar un programa sistematizado de arco de sonrisa y biotipo facial para el diagnóstico ortodóntico en estudiantes de la Escuela de Estomatología de la Universidad Señor de Sipán, Chiclayo. Se utilizaron dos fotografías frontales, una donde el paciente debió sonreír para el análisis del arco de sonrisa, y otra sin sonreír para el análisis del biotipo facial, registradas en la ficha de recolección de datos. Los datos cualitativos fueron analizados usando la prueba de Chi cuadrado para determinar diferencias significativas entre el arco de sonrisa y el biotipo facial. Con respecto a la relación entre el arco de sonrisa y el biotipo facial en estudiantes, se concluyó que en el biotipo braquifacial el 46% presentó un arco de sonrisa consonante y el 54% no consonante, en el biotipo mesofacial el 38% un arco de sonrisa consonante y un 62% no consonante, y en el biotipo dolicofacial el 41% un arco de sonrisa consonante y un 59% no consonante, sin embargo no encontrándose una relación estadísticamente significativa entre el arco de sonrisa con el biotipo facial (p= 5.991). Según el arco de sonrisa se concluyó que el 41% (n=79), de los estudiantes presentaron un arco de sonrisa consonante, y un 59% (n=112) un arco de sonrisa no consonante. Según el biotipo facial se encontró que el 33% (n=63) de los estudiantes presentaron un biotipo braquifacial, el 38% (n=72) un biotipo mesofacial, y el 29% (n=56) un biotipo dolicofacial. Tesis

Published
2017

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