Perioral age-related changes in smile dynamics along the vertical plane
نویسندگان
چکیده
منابع مشابه
Dynamic smile analysis: changes with age.
INTRODUCTION The objective of this study was to define age-related changes in the smile. The areas of interest were upper lip length at smile and repose, upper lip thickness at smile and repose, maxillary incisal display at smile, interlabial gap height at smile, smile index, percentage of buccal corridors, intercommissural width at rest, smile height, and smile arc. A secondary objective was t...
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Age related changes in the dynamics of accommodation (far to near focus) and disaccommodation (near to far focus) are reported in this study. Dynamic responses to step stimulus demands from 1D to 6D, in 1D steps, were recorded with a PowerRefractor in 66 subjects in the age range 14-45 years. The accommodative and disaccommodative responses were fit with exponential functions to calculate respo...
متن کاملAge related changes in accommodative dynamics in humans
Age related changes in accommodative dynamics in humans Dear Editor Using the PowerRefractor, Kasthurirangan and Glasser (2006) conclude that: ''For accommodation, time constant increased and peak velocity decreased with age.'' For subjects less than 40 years of age, I find that the authors' data does not support this conclusion. Examination of the authors' Figs. 5a–c for their subjects of 14.7...
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We focus on aspects of health changes, the importance of cohort effects, age related health changes and the effect of labour market status and work history on health. We moreover assess the relative importance of gradual changes and sudden shocks in health changes and the role of work status on the likelihood of experiencing a health shock. A fixed effect panel data model is estimated on two wa...
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PURPOSE To study variations in dynamic measures of accommodation and disaccommodation with age in subjects ranging from preschool to adulthood. METHODS Accommodative responses to a step stimulus cartoon movie alternating from distance to near were recorded with a dynamic infrared photorefractor. Subjects viewed at least three stimulus cycles of far and near for four near stimulus demands (2, ...
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ژورنال
عنوان ژورنال: The Angle Orthodontist
سال: 2012
ISSN: 0003-3219,1945-7103
DOI: 10.2319/061212-488.1