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Esthetics, Dental clinical trials

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NCT ID: NCT06280027 Completed - Esthetics, Dental Clinical Trials

Effect of Midline Discrepancy and Crown Width Disporportion on Esthetics

Start date: June 5, 2023
Phase:
Study type: Observational

In the web-based cross-sectional study 180 participants were included. Half of them (n = 90) were patients (laypeople) of the university clinic and the remaining half were restorative dentists and prosthodontists with similar levels of clinical experience (at least 3 years of academic training). A frontal view full-face portrait image of a 25-year-old female was selected as a model for the study, with a smile exhibiting good dental alignment, a quite good midline position, and tooth size symmetry. The original image was digitally modified by a single restorative instructor using Photoshop CC (Adobe, USA) software program. The modifications were divided into three parts. The first part was the generation of midline discrepancy at different levels. The midline was digitally moved to the right side of the patient 1 - 4 millimeters, gradually. The midline movement was performed together with the whole maxillary arch. The second part was the generation of individual crown width disproportions. Accordingly, the mesiodistal width of the left central, lateral, and canine was digitally decreased one by one, gradually, while the width of the symmetrical teeth on the right side was simultaneously increased. The third part was the generation of distributed crown width disproportions. Accordingly, the total mesiodistal width of the left central, lateral, and canine was equally decreased, gradually, while the total width of the symmetrical teeth on the right side was simultaneously increased. In total, 15 images were displayed in random order to the participants including the original image. An online survey was generated to quantitatively evaluate the level of esthetic perception. Subsequently, the participants were asked to evaluate the level of smile esthetics of the presented random images, without being informed about the digital manipulations of the images. The participants were even not informed about the original image. They were expected to answer the question "How esthetic do you consider this smile?" The evaluation of each image was performed via a Visual analog scale VAS, ranging from point 0 (extremely not esthetic) to point 100 (extremely esthetic).

NCT ID: NCT03499093 Completed - Esthetics, Dental Clinical Trials

French Version of the Orofacial Esthetic Scale

Start date: September 26, 2016
Phase:
Study type: Observational

The aims of this study were to develop a French version of the Orofacial Esthetic Scale (OES-F) and to investigate its psychometric properties. The OES is an eight-item instrument that assesses self-reported orofacial esthetics in prosthodontic patients. The first seven items refer to direct esthetic impacts and the eight is a global assessment item. For each item, an 11-point numeric scale (ranged from 0 = very dissatisfied to 10 = very satisfied) is used, and the first seven scores are combined into a summary score from 0 (worst score) to 70 (best score). The original English version of the OES was translated into French according to the guidelines. The reliability (internal consistency and test-retest reliability) and validity (convergent and discriminative validities) were tested in a sample of 140 patients. To assess test-retest reliability, 35 patients answered twice the OES-F with a temporal distance of two weeks apart.

NCT ID: NCT03192852 Completed - Esthetics, Dental Clinical Trials

Evaluation of Dental Bleaching In-office

Bleaching
Start date: July 1, 2018
Phase: N/A
Study type: Interventional

We aim to evaluate colorimetric changes after supervised whitening treatment, using Violet LED light associated or not with carbamide peroxide 35% gel. 80 will be divided into: Group 1 - Violet LED light, Group 2 Violet LED light + carbamide peroxide 35% gel, Group 3 -hydrogen peroxide 35% and Group 4 will be submitted to the gingivoplasty surgery procedure, for aesthetic desire, after whitening treatment with Violet LED light without gel. The colorimetric changes will be measured before, right after each whitening session in the end of the period of 3 months, through the Vitapan Classical (Vita) color scale, and by digital spectrophotometer. The sensibility degree will be measured by the Visual Analogue Scale (VAS) . The gum tissues Group 4, will be analyzed by histomorphometrically. Quality of life will be evaluated.

NCT ID: NCT01871220 Completed - Esthetics, Dental Clinical Trials

Periimplant Mucosa Dynamics Around Divergent and Concave Atlantis Abutment Transition Profiles

Start date: December 30, 2013
Phase: N/A
Study type: Interventional

The purpose of this study is to compare the effect of two different implant abutment designs on gum tissue volume changes over time after implant placement.