Lamichhane Simant, Humagain Manoj, Thapa Sachita, Bhusal Sita, Rijal Arjun Hari, Rupakhety Prakriti, Ranjan Rakesh
Kathmandu University School of Medical Sciences, Dhulikhel, Kavrepalanchok, Nepal.
Chandragiri Dental Home and Implant Center Pvt. Ltd., Kausaltar, Bhaktapur, Nepal.
JNMA J Nepal Med Assoc. 2024 Apr 30;62(273):284-287. doi: 10.31729/jnma.8566.
The eruption of teeth is considered to be a continuous phenomenon. Two types of eruption are possible namely, active and passive eruption. Failure in passive eruption (by the apical movement of gingiva from the enamel surface) generally results in a clinical condition known as altered passive eruption. It can result in the shortened crown height of a tooth and an esthetically unpleasant situation i.e., excessive gingival display or gummy smile. The main motto of this study was to find out the prevalence of altered passive eruption and associated gingival biotypes in adult patients visiting for dental treatment in tertiary centers along with strategically placed outreach centers.
A descriptive cross-sectional study was done in the Department of Dentistry, Dhulikhel Hospital, and four outreach centers of the same hospital. The study was conducted from October 2022 to April 2023 after obtaining the ethical approval. Convenience sampling was done. Point estimate and 95% Confidence Interval were calculated.
Among 165 patients, the prevalence of altered passive eruption was 21 (12.72%) (7.62-17.78 at 95% Confidence Interval). Furthermore, among 21 patients, the altered passive eruption was seen in the thick biotype patients in 16 (76.19%) and thin biotype patients in 5 (23.81%).
The prevalence of altered passive eruption appeared to be equivalent when compared with the previous studies.
牙齿萌出被认为是一个持续的现象。存在两种可能的萌出类型，即主动萌出和被动萌出。被动萌出失败（牙龈从牙釉质表面向根尖方向移动）通常会导致一种临床状况，称为被动萌出异常。它可能导致牙齿冠部高度缩短以及美观上令人不悦的情况，即牙龈过度外露或露龈笑。本研究的主要目的是找出在三级中心以及战略布局的外展中心接受牙科治疗的成年患者中被动萌出异常和相关牙龈生物型的患病率。
在杜利凯尔医院牙科以及该医院的四个外展中心进行了一项描述性横断面研究。在获得伦理批准后，于2022年10月至2023年4月进行了该研究。采用便利抽样。计算了点估计值和95%置信区间。
在165名患者中，被动萌出异常的患病率为21例（12.72%）（95%置信区间为7.62 - 17.78）。此外，在这21例患者中，厚生物型患者中有16例（76.19%）出现被动萌出异常，薄生物型患者中有5例（23.81%）出现被动萌出异常。
与先前的研究相比，被动萌出异常的患病率似乎相当。
