Interobserver agreement was calculated using Kappa statistics. Tooth counts, TAC values, and percentages were used to characterize tooth agenesis. Chi-square test (Fisher’s Exact Test) was used to evaluate the relationship between the prevalence Dabrafenib molecular weight of agenesis and other dichotomous variables such as sex, cleft/non cleft quadrant, and maxilla/mandible jaw. The Mann–Whitney U test was used to evaluate the number of congenitally
missing teeth between males and females, right and left cleft quadrant, and the cleft and non-cleft quadrant. The kappa values for the interobserver agreement are presented in Table 2. Of the 28 kappas 25 were larger than 0.8. Only the kappa values for the central incisor at the cleft side of the maxilla and the second premolar at the non-cleft side of the maxilla were low (−0.008 and 0.49, respectively). Prevalence of the absence per tooth type and mouth quadrant in 115 patients with complete
UCLP ranged from 0 to 39.1% (Table 3). The lateral incisor of the maxillary cleft quadrant was the tooth most frequently missing (39.1%) followed by the maxillary lateral incisor (8.7%) and the mandibular second premolar (7.8%) both in the non-cleft quadrant (Table 3). Agenesis of at least one tooth was found in 48.7%, whereas agenesis of only one tooth was found in 35.7% of patients. Agenesis outside the cleft was observed in 20.9% of patients, of which 9.5% were in patients with missing second premolars in the non-cleft quadrant (Table 4). The number of missing teeth per patient ranged from one to three (Table see more 4), whereas 51.3% of patients had no tooth agenesis. The most common pattern was the lateral incisor missing in the maxillary cleft quadrant (27%) followed by agenesis of both maxillary lateral incisors (5.2%) (Table 4). The analysis of the relationship between sex and tooth agenesis was not significantly different (p = 0.695). When the relationship between sex and side of the cleft was analyzed, no relationship was found (p = 0.824). We found a significant relation between
tooth agenesis and sidedness of the cleft, being significantly higher in the cleft quadrant (p = 0.020). The null hypothesis, that missing teeth have the same distribution in cases with a right- or left-sided cleft was rejected (p = 0.18). Children with Y-27632 2HCl CUCLP on the right side were less likely to have missing teeth. There was no significant difference between the cleft and non-cleft quadrants in the number of missing teeth in the mandible (p = 0.098). The frequency and percentage of TAC of missing teeth in the whole mouth and per quadrant are presented in Table 4 and Table 5, respectively. Maxillary and/or maxillary and mandibular second and/or first premolars were involved in all patterns. The maxillary central incisor was involved in only one tooth agenesis pattern and the first premolars in two.