The objective of this study was to determine the thickness of the buccal alveolar bone and the prevalence of dehiscence and fenestration in the anterior and premolar maxillary teeth of Vietnamese individuals aged 18–25 using cone-beam computed tomography (CBCT). A total of 121 healthy young Vietnamese individuals aged 18–25 with healthy periodontal status in the anterior and premolar maxillary regions participated in this study and underwent CBCT imaging. Buccal alveolar bone thickness (ABT) and the presence of dehiscence and fenestration were measured and analyzed. Appropriate statistical tests were used to compare differences in ABT, the prevalence of dehiscence and fenestration among the anterior and premolar maxillary teeth groups. The mean age of the participants was 21.8 years, with males comprising 51.2 % of the sample. In order of central incisors, lateral incisors, canines, first premolars and second premolars, the buccal ABT was 1.03 ± 0.23 mm, 1.01 ± 0.22 mm, 1.06 ± 0.21 mm, 1.20 ± 0.26 mm and 1.49 ± 0.44 mm, respectively; The prevalence of dehiscence was 0.41 %, 1.65 %, 6.20 %, 4.96 %, and 0.41 %, respectively; the prevalence of fenestration was 3.72 %, 34.71 %, 27.27 %, 11.16 %, and 0.41 %, respectively. The buccal ABT in the premolar group was significantly greater than that in the anterior teeth (p < 0.05). There were significant differences in the prevalence of dehiscence and fenestration among different tooth groups (p < 0.05). In young Vietnamese individuals, ABT ≤1 mm was prevalent in the central incisors, lateral incisors and canines. Dehiscence was most common in canines, while fenestration was frequently observed in lateral incisors and canines.

KEY WORDS: Alveolar bone morphology; Cone-beam computed tomography; Facial bone; Dehiscence; Fenestration.