A retrospective radiographic survey of embedded primary molar roots in Saudi adult patients

This retrospective study reports the radiographic prevalence of embedded primary molar roots within Saudi adult dentulous patients. Embedded roots of primary molars were viewed radiographically by evaluation of the records of 300 patients. Embedded primary molar roots were detected in 7 percent of the viewed patient radiographs. Fifty-five percent of the embedded roots demonstrated the concomitant existence of partial bony ankylosis. The remaining 45 percent of the embedded roots were surrounded by an intact lamina dura and periodontal ligament space. The frequency of occurrence demonstrated an age-based relationship, showing 9 percent prevalence in the older age-group (41-50 yr.) as compared to a 45 percent occurrence seen in the younger (15-20 yr.) group. Seventy-seven percent of the embedded roots were found within the mandible as compared with a 23 percent occurrence in the maxilla.