Imaging study in subjects with delayed tooth development
AIM:The incidence and clinical characteristics of delayed tooth development were investigated by performing panoramic radiographs.METHODS:A total of 22 338 panoramic radiograph of subjects aged 5 to 14 years were collected from January 2022 to June 2023,and the incidence of delayed tooth development was observed,and other dental abnormalities was recorded.SPSS 24.0 software was used for statistical analysis.RESULTS:The incidence of delayed tooth development was 1.37％(306/22 338).There was no significant difference between genders,left and right jaws,maxillary and mandibular(P＞0.05).There were more unilateral subjects than bilateral,and more subjects in congenital absence than no absence group,and the difference between the two groups was statistically significant(P=0.000).1 and 2 de-layed tooth development accounted for 96.41％(295/306)of our subjects.The mandibular second premolar was the fre-quently delayed tooth,followed by the maxillary lateral incisor and the maxillary second premolar.CONCLUSION:De-layed tooth development is common in clinic,most of which are 1～2,and unilateral.Delayed tooth development in congen-ital absence is significantly more than normal group.Most delayed teeth are the second premolar and maxillary lateral inci-sor.It is recommended to check regularly and pay close attention to tooth embryo development for children with delayed tooth.
delayed tooth developmentcongenital permanent teeth absencefusion of toothsupernumerary teethpanoramic radiograph
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