Permanent maxillary central incisor and first molar rotations in the mixed dentition in repaired complete unilateral cleft lip and palate and their relationship with absence of teeth in their vicinity.

OBJECTIVES: To describe qualitatively and quantitatively the directions and magnitudes of rotations of permanent maxillary central incisors and first molars in the mixed dentition in repaired complete unilateral cleft lip and palate (UCLP) and study their associations with absence of teeth in their vicinity. MATERIALS AND METHODS: Dental casts and orthodontic records taken prior to orthodontic preparation for alveolar bone grafting of 74 children with repaired UCLP (53 male, 21 female; aged 8.9 ± 1.0 years) were studied. Directions and magnitudes of permanent maxillary central incisor and first molar rotations were recorded. Tooth absence was confirmed from longitudinal radiographic records. Incisor and molar rotations were analyzed in relation to the absence of teeth in their vicinity. RESULTS: Distolabial rotation of the permanent maxillary central incisor was noted in 77.14% on the cleft side, while distopalatal rotation was noted in 82.19% on the noncleft side. Incisor rotation was greater when a permanent tooth was present distal to the cleft side central incisor, in the greater segment. The permanent maxillary first molar showed mesiopalatal rotation, which was greater on the cleft side and when there was absence of one or more teeth in the buccal segment. CONCLUSIONS: Presence and absence of teeth were associated with the severity of incisor and molar rotations in UCLP. Crowding of anterior teeth in the greater segment was associated with a greater magnitude of rotation of the cleft side permanent central incisor. Absence of one or more buccal segment teeth was associated with greater magnitude of rotation of the molar.

Incisor and molar overjet, arch contraction, and molar relationship in the mixed dentition in repaired complete unilateral cleft lip and palate: A qualitative and quantitative appraisal.

OBJECTIVE: To compare the mixed dentition incisor and molar overjet, severity of contraction of the dental arch, and the sagittal molar relationship on the cleft side vs the noncleft side in children with repaired complete unilateral cleft of the lip and palate (UCLP). MATERIALS AND METHODS: Orthodontic records taken prior to orthodontic preparation for alveolar bone grafting were screened to select study casts from patients with nonsyndromic repaired complete UCLP who did not have mandibular skeletal or dental asymmetry. The study sample comprised dental casts from 74 children aged 8.9 ± 1 years. Standardized digital photographs were acquired at 1:1 magnification. A coordinate system was developed using digital image-processing software (Photoshop CS4 and Adobe Illustrator). Incisor and molar overjet, Angle's classification, and arch contraction were recorded. Descriptive statistics, paired t-tests, and kappa statistics were used to compare the cleft and noncleft sides. RESULTS: A negative overjet of -1 to -5 mm was often present at the incisors, with greater frequency and magnitude on the cleft side. Class II molar relation was more frequent on the cleft side (61.1%) than on the noncleft side (47.2%). Significantly greater contraction of the cleft side deciduous canine and deciduous first molar was noted, while the difference was very minor at the first permanent molar. CONCLUSIONS: Cleft side maxillary arch contraction was most severe in the deciduous canine and first deciduous molar region and progressively less severe in the posterior region of the arch. A greater frequency and severity of negative overjet and Class II molar relationship was seen on the cleft side.

Presurgical presentation of columellar features, nostril anatomy, and alveolar alignment in bilateral cleft lip and palate after infant orthopedics with and without nasoalveolar molding.

OBJECTIVES: (1) To evaluate quantitative differences in presurgical presentations of alveolar alignment and nostril anatomy of infants with BCLP treated with nasoalveolar molding (NAM) from those treated with maxillary infant orthopedics only (IO) and (2) to detect interrelationships between presurgical nasoalveolar anatomy, age at lip surgery, age of commencing, and durations of alveolar and nasal molding. METHODS: A retrospective analysis was conducted on nasal-alveolar measurements and presurgical treatment records of infants with BCLP who received lip repair by a single surgeon in a tertiary-care, referral teaching hospital consecutively from 2000 to 2009 after undergoing NAM (n  =  29; 51 nostrils) or IO (n  =  17; 32 nostrils). Paired t tests analyzed nostril and alveolar symmetry in each group. Intergroup comparisons were made by linear mixed-model regression analyses. Pearson's correlation tests were conducted to detect significant interrelationships within groups. RESULTS: Significant between-group differences were noted in alveolar irregularity (NAM: 3.58 ± 1.02 mm; IO: 7.31 ± 1.28 mm; p < .01), columellar length (NAM: 2.88 ± 0.27 mm; IO: 1.48 ± 0.34 mm; p < .001), columellar width (NAM: 6.10 ± 0.21 mm; IO: 6.88 ± 0.26 mm; p < .01), columellar length/width ratio (NAM: 0.48 ± 0.05; IO: 0.20 ± 0.07; p < .05), and columellar angle (NAM: 0.98 ± 1.1°; IO: 3.69 ± 1.37°; p < .05). Differences in age of commencing presurgical orthopedics, lip surgery, and treatment durations were not significant. Better-aligned alveolar segments in the NAM group did not statistically correlate with nostril dimensions. Alveolar irregularity and nostril height in the IO group strongly correlated. CONCLUSIONS: Infants who received NAM had longer columellae and better-aligned alveolar segments than those who received only IO. Other nostril dimensions were not significantly different.