The Journal of Indian Prosthodontic Society

CATEGORY: ORIGINAL RESEARCH
Year
: 2020  |  Volume : 20  |  Issue : 5  |  Page : 17--18

Comparative evaluation of relationship of the smile zone shape and upper lip mobility with number of total maxillary teeth exposed and amount of maxillary anterior teeth exposed during smile


Poonam Kulkarni 
 Sri Aurobindo College of Dentistry, Indore, India

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How to cite this article:
Kulkarni P. Comparative evaluation of relationship of the smile zone shape and upper lip mobility with number of total maxillary teeth exposed and amount of maxillary anterior teeth exposed during smile.J Indian Prosthodont Soc 2020;20:17-18


How to cite this URL:
Kulkarni P. Comparative evaluation of relationship of the smile zone shape and upper lip mobility with number of total maxillary teeth exposed and amount of maxillary anterior teeth exposed during smile. J Indian Prosthodont Soc [serial online] 2020 [cited 2021 Feb 26 ];20:17-18
Available from: https://www.j-ips.org/text.asp?2020/20/5/17/306343


Full Text



Introduction: Smile zone mainly encompasses the teeth and gingiva. Aim of this paper is to determine visibility of maxillary teeth in males and females at superior and lateral lip mobility in a specific shape of smile zone.

Methodology: 384 subjects of 18 to 40 years were selected. An image of each subject's face was captured in resting and spontaneous smiling state under standardized condition. Smile zone shape, Lip mobility superiorly and laterally, number of maxillary teeth visibility, amount of maxillary anterior teeth visibility and the relationship of all these parameters in males and females were analyzed. Unpaired- student t test, one-way ANOVA, Post-hoc, and Pearson chi-square tests were used for analysis.

Result: More common smile zone shape was bow. 201 subjects were having the superior lip mobility in the range of 1-5mm and exposure of the right and left central incisors was 71.09 % and 71.23 %, Right and left lateral incisors was 79.33% and 79.77%, right and left canines was 67.18% and 73.91%. Ellipse smile zone was having maximum amount of exposure. Females were having maximum exposure of teeth. More common range of lateral lip mobility was 11-15 mm and maximum numbers of teeth were visible in straight smile zone shape.

Conclusion: More common smile zone shape was bow. Superior and lateral lip mobility was 2-15mm and 4-30mm. Maximum amount of teeth exposure was seen in ellipse smile zone shape. More numbers of teeth were exposed in straight smile zone shape. Females were having maximum exposure both in lateral and superior lip mobility.