Department of Orthodontics, People's Dental College and Hospital, Sorakhutte, Kathmandu, Nepal.
JNMA J Nepal Med Assoc. 2022 Mar 11;60(247):286-289. doi: 10.31729/jnma.7072.
New concepts and methods have been developed in orthodontics with patients' increased concern on esthetics. Among the various parameters of smile, smile type, smile arc, and smile symmetry are essential for a beautiful smile. The objective of this study was to find out the prevalence of average type in posed smiles of individuals visiting the department of orthodontics.
This descriptive cross-sectional study was conducted from 1st April 2021 to 30th June 2021 at a tertiary care hospital. Ethical clearance was obtained from the Institutional Review Committee (Reference number: 1, CH No. 30, 2077/2078). A convenience sampling technique was used to collect a total of 413 samples of posed smile photographs. Data was collected and analysed using Microsoft Excel 2013. Point estimate at 95% Confidence Interval was calculated along with frequency and percentage.
Among 413 individuals, the average type of smile was found in 193 (46.73%) (42.12-51.74 at 95% Confidence Interval). Out of 87 average smile type males, most of them 51 (58.62%) had non consonant smile arcs and 47 (54.02%) had asymmetric type smiles. On the contrary, the majority of females 76 (71.70%) had a consonant arc smile while 63 (59.43%) had an asymmetric smile.
The prevalence of the average type of smile was higher in our study as in other published literatures.
dental esthetics; dental photography; orthodontics; smiling.
随着患者对美观的关注度的提高，正畸学领域出现了新概念和新方法。在微笑的各种参数中，微笑类型、微笑弧和微笑对称性对于美丽的微笑至关重要。本研究旨在了解正畸科就诊患者摆拍微笑中平均类型的流行情况。
这是一项 2021 年 4 月 1 日至 6 月 30 日在一家三级保健医院进行的描述性横断面研究。本研究获得了机构审查委员会的伦理批准（注册号：1，CH No. 30，2077/2078）。采用便利抽样技术收集了共 413 张摆拍微笑照片的样本。使用 Microsoft Excel 2013 收集和分析数据。计算了 95%置信区间的点估计值以及频率和百分比。
在 413 名个体中，发现平均类型的微笑占 193 人（46.73%）（95%置信区间为 42.12-51.74）。在 87 名平均微笑类型的男性中，大多数 51 名（58.62%）的微笑弧不一致，47 名（54.02%）的微笑类型不对称。相反，大多数女性 76 名（71.70%）的微笑弧是一致的，而 63 名（59.43%）的微笑类型不对称。
在我们的研究中，平均类型的微笑流行率高于其他已发表的文献。
牙科美学；牙科摄影；正畸学；微笑。
