Clinical Statistics on Patients with Cleft Lip and/or Palate for 19 years in the Orthodontic Clinic, Kyushu University

• Published in: Journal of Japanese Cleft Palate Association Vol. 14; no. 1; pp. 159 - 170
• Main Authors: SUZUKI, Akira, MUKAI, You, TAKAHAMA, Yasuhide, KONDOU, Yukiko, OHMIZO, Noritaka, KOUNO, Kintiko, WATANABE, Mieko
• Format: Journal Article
• Language: Japanese
• Published: Japanese Cleft Palate Association 01.06.1989
• Subjects: arch form; cleft lip and/or palate; clinical statistics; cross-bite; 反対咬合; 口唇裂口蓋裂; 歯列弓形態; 臨床統計
• ISSN: 0386-5185; 2186-5701
• DOI: 10.11224/cleftpalate1976.14.1_159

Clinico-statistical analyses were carried out on 996 patients (525 males and 471 females) with cleft lip and/or palate in the Orthodontic Clinic, Kyushu University Dental Hospital, during about 19 years from August 1970 to December 1988. The findings were as follows: 1. The peak of the age of the patients at first visit to our Orthodontic clinic was 3 years old. 2. Distributions of cleft type were; cleft lip (CL) 6.0 %, cleft lip and jaw (CUJ) 17.4 %, cleft lip and palate (CLP) 59.8 %, isolated cleft palate (CP) 16.8 %. 3. Distributions of cleft site were; bilateral cleft 18.6 %, left side cleft 53.4 %, right side cleft 27.6 %. 4. Sex ratio (male: female) were; CL 1.4: 1, CLJ 1: 1, CLP 1.5: 1, CP 1: 2.4. 5. The occurence of the premature delivery (36 weeks and less) was significantly higher than of Japanese general subjects (p<0.05). There was no significant difference in the means of birth weight, birth height and mother's age. 6. The most frequent number of siblings was two (55.1 %). The rate of the first and second children in the birth rank was 85.8 % and the rate of the last child was 66.9 %. 7. Arch form in unilateral cleft lip and palate were; Overlap of alveolar processes 6.8 % Butt-joint contact between alveolar processes 81.4 % No contact between alveolar processes 11.8 % 8. The prevalence of cross-bite was 84.6 % in all patients,87.9 % in unilateral cleft lip and palate patients,94.0 % in bilateral cleft lip and palate paatients. 9. The rate of patients who rejected the orthodontic treatment were; 23.3 % in CL,16.7 % in CLJ,11.8 % in CLP,21.6 % in CP patients.