Periodontal Healing of Maxillary Second Molar after Extraction of Impacted Third Molar

doi:10.13701/j.cnki.kqyxyj.2020.11.010

Abstract

Abstract: Objective: To evaluate the change in the periodontal status of maxillary second molars after minimally invasive surgical extraction of asymptomatic adjacent impacted lower third molars. Methods: This prospective clinical study was conducted in 43 higher-risk periodontal impacted maxillary third molar. Plaque index, gingival index, and bleeding on probing and probing depth (PD) were recorded before surgery and at 3, 6, and 12 months after surgery at 5 sites on the distal aspect of the maxillary second molars. Results: The initial mean PD was (3.67±1.64) mm, with the deepest mean PD was at the distopalatal of the distal surface. At 12 months, a mean PD average of (2.12±0.70) mm was recorded, with a total average recovery of (1.55±1.47)mm (P＜0.05), that was higher at 3 months(1.46±1.45)mm (P＜0.05). The improvements of PD were statistically significant (P＜0.05) from baseline to 12-month follow-up and from the buccal to the distopalatal of the distal aspect of the maxillary second molars. The plaque index and gingival index of maxillary second molars were improved 12 months after surgery compared with those before surgery. Conclusion: Young adults with high-risk periodontal maxillary third molar impactions may benefit from early extraction.

Key words: impacted maxillary lower third molar, maxillary second molar, periodontal defect, minimally invasive tooth extraction

LI Juan, ZHANG Dong, KANG Zhuangfei, ZHANG Ning, GU Jianqi. Periodontal Healing of Maxillary Second Molar after Extraction of Impacted Third Molar[J]. Journal of Oral Science Research, 2020, 36(11): 1027-1030.

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