Ciavarella Domenico, Tepedino Michele, Gallo Crescenzio, Montaruli Graziano, Zhurakivska Khrystyna, Coppola Ludovica, Troiano Giuseppe, Chimenti Claudio, Laurenziello Michele, Lo Russo Lucio
Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy.
Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy.
J Clin Exp Dent. 2017 Dec 1;9(12):e1425-e1430. doi: 10.4317/jced.54261. eCollection 2017 Dec.
To evaluate if changes in lower incisor position following orthodontic treatment are correlated with development of gingival recessions.
Pre- and post-treatment digital models and lateral cephalograms of 22 subjects were collected retrospectively. The clinical crown length, gingival scallop, and papilla height of the central lower incisor were measured along with the cephalometric incisor's inclination, the distance from the mandibular plane, and the distance between the Infradentale and Menton points. Statistical correlations between gingival and cephalometric variables were studied. In addition, two groups were defined based on the post-treatment incisor inclination value ('normal' or 'proclined') and compared.
The incisor inclination was correlated with the change in gingival scallop and papilla height. Moreover, there was a statistically significant difference in clinical crown height and gingival scallop between the 'normal' group and the 'proclined' group.
Changes in lower incisor position, especially an excessive proclination, after orthodontic treatment may play a role in the development of gingival recession. Orthodontic treatment, Incisor inclination, IMPA, Gingival recession, Alveolar bone.
评估正畸治疗后下切牙位置的变化是否与牙龈退缩的发生相关。
回顾性收集22名受试者治疗前和治疗后的数字模型及头颅侧位片。测量下颌中切牙的临床冠长、牙龈扇贝形、乳头高度，以及头颅侧位片上切牙的倾斜度、与下颌平面的距离、下齿槽座点与颏下点之间的距离。研究牙龈和头颅侧位片变量之间的统计相关性。此外，根据治疗后切牙倾斜度值（“正常”或“前倾”）定义两组并进行比较。
切牙倾斜度与牙龈扇贝形和乳头高度的变化相关。此外，“正常”组和“前倾”组在临床冠高度和牙龈扇贝形方面存在统计学显著差异。
正畸治疗后下切牙位置的变化，尤其是过度前倾，可能在牙龈退缩的发生中起作用。正畸治疗、切牙倾斜度、下中切牙-下颌平面角、牙龈退缩、牙槽骨。
