Made available in DSpace on 2014-12-17T14:13:58Z (GMT). No. of bitstreams: 1 GiselleGS.pdf: 211619 bytes, checksum: 6067524ca70f63167077629a96864d9a (MD5) Previous issue date: 2006-12-11 / Ideally the smile should expose minimal gingival, therefore patients with gummy smile and passive eruption altered or excessive marginal gingivae, usually excessive gingival display because incomplete anatomical crown exposure is present. If the maxillary incisor show at rest is optimal, active upper incisor intrusion should not be iniciated. To achieve a smile with minimal gingival exposure, the anatomic crown should be fully exposed by surgical crown lengthening. Precise determination of the location of cementoenamel junction prior to surgery, precise placement of incisions and correct establish of biological width are necessary in order to achive this goal. One protocol is decribed and clinical results from 15 brazilian subjects, after three years post surgery are showed / Este projeto consagrou o encontro de duas ?reas do conhecimento: Periodontia e Fonoaudiologia, sendo o mesmo orientado por uma cirurgi? dentista, doutora em Odontologia e realizado por uma fonoaudi?loga mestre em Dist?rbios da Comunica??o. Os experimentos foram realizados por uma equipe multidisciplinar, composta por fonoaudi?logo e cirurgi?es dentistas que buscaram a rela??o em indiv?duos portadores de sorriso gengival e as implica??es miofuncionais orais. Objetivo: A proposta deste estudo foi verificar a influ?ncia do sorriso gengival no vedamento labial. Metodos: 18 indiv?duos com sorriso gingival e dificuldade no vedamento labial foram submetidos a avali??o oromiofuncional e eletromiografia de superf?cie parea verificar o esfor?o do m?sculo mentual para a realiza??o do vedamento labial nas condi??es pr? e p?s cir?rgica. Foi realizada cirurgia periodontal para remover o excesso de tecido gengival e/ou volume ?sseo da pr?-maxila e, ap?s 6 meses os pacientes foram reavaliados. Resultados: Diminui??o da contra??o e tens?o do musculo mentual foi clinicamente observado durante o vedamento labial e a an?lise eletromiogr?fica revelou uma diferen?a estatisticamente significante (27.67 ?RMS - 6.46 ?RMS, p=0.004) no esfor?o do m?sculo mentual para o vedamento labial ap?s a cirurgia. Conclus?o: O vedamento labial ? infuenciado pelo volume ?sseo e/ou gingival e a cirurgia periodontal contribiu para um contato mais suave entre os l?bios

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BACKGROUND: Smile esthetics play a major role in the perception of a person’s attractiveness, as well as other social parameters. The study aim was to see if altering the gingival display of patients would affect perceptions of the aforementioned social parameters. METHODS: Smiling photographs were taken and then digitally altered so as to lengthen the teeth and reduce the amount of gingiva. These photographs were shown to a group of senior dental students, and a group of evaluators with no formal dental training. Groups were asked to rate each picture’s attractiveness, friendliness, trustworthiness, intelligence, and self-confidence. RESULTS: The digitally altered photographs were rated higher for all five social parameters than were their unaltered counterparts (p<0.0001). There were no statistically significant differences between the two groups of evaluators. CONCLUSIONS: Excessive gingival display positively affected how attractive a person’s smile is judged, and also how friendly, trustworthy, intelligent, and self-confident they are.

Objective: To collect data regarding Canadian laypersons perceptions of smile esthetics and compare these data to US data in order to evaluate cultural differences. Methods: Using Adobe® Photoshop® 7, a digital image of a posed smile of a sexually ambiguous lower face was prepared so that hard and soft tissue could be manipulated to alter Buccal Corridor (BC), Gingival display (GD), Occlusal Cant (OC), Maxillary Midline to Face Discrepancy (MMFD) and Lateral Central Gingival Discrepancy (LCGD). Adult Canadian laypersons (n=103) completed an interactive computer-based survey of 29 randomized images to compare smile preferences for these variable. The custom survey was developed to display fluid, continuously appearing modifiable smile variables using MATLAB® R2008 for presentation. These data were compared to previously published data for US laypersons. Statistical inference was determined using Wilcoxon Rank Sum tests. Results: Canadian laypersons were more sensitive in detecting deviations from ideal and had a narrower range of acceptability thresholds for BC, GD, OC, MMFD and LCGD. Ideal esthetic values were significantly different only for BC. Conclusions: It appears cultural differences do exist related to smile characteristics. Clinically significant differences in the preference of the smile characteristics were found between Canadian and US laypersons. Canadian laypersons, on average, were more discriminating to deviations from ideal and had a narrower range of acceptability.

Objective: To collect data regarding Canadian laypersons perceptions of smile esthetics and compare these data to US data in order to evaluate cultural differences. Methods: Using Adobe® Photoshop® 7, a digital image of a posed smile of a sexually ambiguous lower face was prepared so that hard and soft tissue could be manipulated to alter Buccal Corridor (BC), Gingival display (GD), Occlusal Cant (OC), Maxillary Midline to Face Discrepancy (MMFD) and Lateral Central Gingival Discrepancy (LCGD). Adult Canadian laypersons (n=103) completed an interactive computer-based survey of 29 randomized images to compare smile preferences for these variable. The custom survey was developed to display fluid, continuously appearing modifiable smile variables using MATLAB® R2008 for presentation. These data were compared to previously published data for US laypersons. Statistical inference was determined using Wilcoxon Rank Sum tests. Results: Canadian laypersons were more sensitive in detecting deviations from ideal and had a narrower range of acceptability thresholds for BC, GD, OC, MMFD and LCGD. Ideal esthetic values were significantly different only for BC. Conclusions: It appears cultural differences do exist related to smile characteristics. Clinically significant differences in the preference of the smile characteristics were found between Canadian and US laypersons. Canadian laypersons, on average, were more discriminating to deviations from ideal and had a narrower range of acceptability.