关键词: 吸烟, 牙槽骨缺损, 锥形束CT, 慢性牙周炎

Abstract:

Abstract：Objective To study the effect of smoking on alveolar bone defect in patients with chronic peridontitis. Methods Select thirty patients respectively in smoking and non-smoking patients with chronic periodontitis，who are scanned by cone beam CT（CBCT）. Florida probe is applied to measure the PD and AL of all the teeth（including teeth's mesial，distal，buccal，lingual）. NNT software is applied to measure the average degree of alveolar bone defects in different regions：incisor area，canine area，premolar area and molar area（including teeth's mesial，distal，buccal，lingual）. Results The periodontal probing depth and attachment loss level had no significant difference（P > 0.05）in smoking group and non-smoking group；smoking group's alveolar bone defect degree was more serious than non-smoking group，the difference being statistically significant（P < 0.05）. Compared with the non-smoking group，alveolar bone defects in smoking group in each site of the same teeth were more serious，the difference being statistically significant（P < 0.05）. In two groups，the alveolar bone defect of canine area was the mildest，the most serious part of the alveolar bone defect in molar area（P < 0.05）. The alveolar bone defect had significant differences in smoking group among different sites of the same teeth（P < 0.05），while the most serious part in maxillary molars palatal. In smoking group，except for the distal sites of mandibular molar area and buccal and lingual sites of mandibular incisor area，the alveolar bone defect of maxillary teeth was more serious than mandibular teeth，the difference being statistically significant（P < 0.05）. In non-smoking group，the alveolar bone defect of the same site in different teeth showed a decreasing trend from the molar area to the canine area. But the alveolar bone defect of each point in mandibullar incisor area was significantly higher than maxillary incisor area，the difference being statistically significant（P < 0.05）. Conclusion In chronic periodontitis patients，the alveolar bone defect of smokers is more serious than non-smokers. The alveolar bone defects of smokers with chronic periodontitis present teeth and site-specific effects and the most serious area is located in maxillary molars palatal. The application of CBCT is conducive for the clinicians to have a better understanding of the alveolar bone defect forms，and provides more help to the diagnosis and treatment of periodontal disease.

Key words: smoking, alveolar bone defect, cone beam CT, chronic periodontitis