A Study of Structural Deformities on Nasomaxillary Complex in Unilateral Cleft Lip and Palate

• Published in: Journal of Japanese Cleft Palate Association Vol. 19; no. 4; pp. 222 - 240
• Main Authors: ANDOH, Yohsuke, ISHIKAWA, Hiroyuki, NAKAMURA, Shinji
• Format: Journal Article
• Language: Japanese
• Published: Japanese Cleft Palate Association 31.10.1994
• Subjects: deviation of the nasal septum; isolated cleft palate; nasomaxillary complex; unilateral cleft lip; unilateral cleft lip and palate; 片側性唇顎口蓋裂者; 片側性唇顎裂者; 硬軟口蓋裂者; 鼻上顎複合体; 鼻中隔弯曲
• ISSN: 0386-5185; 2186-5701
• DOI: 10.11224/cleftpalate1976.19.4_222

The purpose of this- study was to reveal the structural characteristics of nasomaxillary complex (NMC) in unilateral cleft lip and palate patients. The cleft groups consisted of 24 unilateral cleft lip and palate subjects (UCLP),24 unilateral cleft lip subjects (UCL) and 24 isolated cleft palate subjects (ICP), while the control group consisted of 25 non-cleft subjects. All subjects were between 8 and 12 years old. The initial P-A and L-R cephalograms were used to describe morphological features. In addition,3 DCT films of 4 patients with UCLP were used to analyse deformities of NMC in threedimension. The results were as follows: 1. At frontal view of the UCLP group, particular patterns of deviation were recognized. The central part of the nasal septum was deviated towards the cleft side, and the lowest point of nasal septum and the apex of an upper incisor were deviated towards the normal side. The width of maxilla on the normal side and on the cleft side were not different. The dental arch width was smaller on the cleft side than that on the normal side. 2. Regarding the causes of NMC deviation, deviation of the nasal septum was caused by the presence of anterior and posterior cleft and palatoplasty. Deviation of the upper incisor apex from the normal side and inclination of central incisors towards the cleft side were caused by the presence of anterior cleft. Constriction of the dental arch width, and shortness of the posterior upper facial height and midfacial depth were caused by palatoplasty. The lingual tipping of upper incisors was caused by lip repair and patatoplasty. 3. Maxillofacial deformities in UCLP were limited to the NMC area. In the major segment, the anterior portion was deviated toward the normal side and the alveolar process of anterior teeth was inclined lingually. In minor segment, the anterior portion was rotated to the inside, and the entire alveolar process was inclined toward the palatal side. 4. The curvature of the nasal septum was suggested to indicate the potential of maxillary growth.