Wahaj Aiyesha, Ahmed Imtiaz
Department of Orthodontics, Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences (DUHS), Karachi.
J Coll Physicians Surg Pak. 2015 Nov;25(11):811-4.
To determine the mean difference of arch dimensions (both intercanine and intermolar width) between cleft lip palate and normal class I occlusion group.
Cross-sectional analytic study.
Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences, [Dow University of Health Sciences (DUHS)], Karachi, from March 2012 to April 2013.
Group 1 consisted of 32 subjects with complete repaired, non-syndromic unilateral and bilateral cleft lip palate. Group 2 consisted of 32 subjects with normal facial morphology and class I occlusion. Exclusion criteria were cleft lip palate subjects with systemic diseases, any arch expansion procedure, incomplete repaired palate, open fistulas, developmental or acquired craniofacial muscular deformities, autoimmune conditions, syndromes, endocrine abnormalities, neurological problems, or previous history of orthodontic treatment and signs and symptoms of temporomandibular disorders, history of trauma, impacted or missing teeth, periodontally involved teeth, subdivision molar classification, skeletal base II and III with molar class I. The transverse width (intercanine and intermolar width) of dental casts was measured with the help of digital caliper. The intercanine width was measured between cusp tips of the canine while the intermolar width distance was measured between mesiobuccal cusp tips of first molars, and buccal grooves of the mandibular first molars in both cleft lip palate and normal class I occlusion group, respectively.
There were 64 subjects with mean 14.7 ±6.8 years in the cleft palate and 14.7 ±6.3 years in the normal group. There was statistically significant differences found between intercanine and intermolar width in maxillary arch (p < 0.001). In mandibular arch, only intercanine width has showed significant difference (p < 0.001) between cleft and normal occlusion class I group.
Maxillary and mandibular intercanine width was found to be significantly reduced in cleft lip palate group (both unilateral and bilateral) as compared to normal class I occlusion group.
确定唇腭裂组与正常I类咬合组之间牙弓尺寸（犬齿间宽度和磨牙间宽度）的平均差异。
横断面分析研究。
2012年3月至2013年4月，位于卡拉奇的伊斯拉特 - 乌尔 - 埃巴德汗口腔健康科学研究所[道健康科学大学（DUHS）]。
第一组由32名完全修复的非综合征性单侧和双侧唇腭裂患者组成。第二组由32名面部形态正常且为I类咬合的受试者组成。排除标准包括患有全身性疾病的唇腭裂患者、任何牙弓扩展手术、腭裂修复不完全、开放性瘘管、发育性或后天性颅面肌肉畸形、自身免疫性疾病、综合征、内分泌异常、神经问题、正畸治疗史以及颞下颌关节紊乱的体征和症状、创伤史、阻生或缺失牙、牙周受累牙、细分磨牙分类、骨骼基II和III伴I类磨牙。借助数字卡尺测量石膏模型的横向宽度（犬齿间宽度和磨牙间宽度）。分别在唇腭裂组和正常I类咬合组中，测量犬齿尖之间的犬齿间宽度，以及第一磨牙近中颊尖与下颌第一磨牙颊沟之间的磨牙间宽度距离。
腭裂组有64名受试者，平均年龄为14.7±6.8岁，正常组平均年龄为14.7±6.3岁。上颌牙弓的犬齿间宽度和磨牙间宽度存在统计学显著差异（p<0.001）。在下颌牙弓中，腭裂组与正常I类咬合组之间仅犬齿间宽度显示出显著差异（p<0.001）。
与正常I类咬合组相比，唇腭裂组（单侧和双侧）的上颌和下颌犬齿间宽度明显减小。
