Journal of Periodontal and Implant Science

Korean Academy of Periodontology (대한치주과학회)
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A study on the periodontal status of second molar adjacent third molar

제 3대구치와 인접한 제 2대구치의 치주상태에 대한 고찰

  • Lee, Hae-Doo (Department of Periodontology, College of Dentistry, Dan-Kook University) ;
  • Hong, Ki-Seok (Department of Periodontology, College of Dentistry, Dan-Kook University) ;
  • Chung, Chin-Hyung (Department of Periodontology, College of Dentistry, Dan-Kook University) ;
  • Lim, Sung-Bin (Department of Periodontology, College of Dentistry, Dan-Kook University)
  • 이해두 (단국대학교 치과대학 치주과학교실) ;
  • 홍기석 (단국대학교 치과대학 치주과학교실) ;
  • 정진형 (단국대학교 치과대학 치주과학교실) ;
  • 임성빈 (단국대학교 치과대학 치주과학교실)
  • Published : 2006.06.30
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Abstract

The purpose of this study was to determine the relationship between the third molar and periodontal status of the adjacent second molar. Fifty patients who had four maxillary and mandibular second molars were consecutively selected for the study subjects. The subjects provided a total of 200 molars, i. e., 100 maxillary and 100 mandibular molars, and classified the groups as follows; third molars that are normally erupted are control group, that are impacted are test 1 group, that are simply extracted are test 2 group, that are surgically extracted are test 3 group. Probing depth, plaque index, gingival index and mobility were measured. The results were as follows. 1. In mesial probing depth, there was no significantly difference. In distal probing depth, there was a significantly difference between control group and test 1 & 3 group in maxilla and between control & test 2 group and test 1& 3 group in mandible(p<0.05). 2. In buccal probing depth, there was a significantly difference between test 2 group and test 3 group in mandible. In lingual probing depth, there was a significantly difference between control group and test 1 & 3 group in mandible(p<0.05). 3. In plaque index, there was a significantly difference between test 1 group and test 2 group in maxilla, between test 1 group and control & test 2 group in mandible(p<0.05). 4. In gingival index, there was a significantly difference between control group and test 1 & 3 group in mandible. In mobility, there was no significantly difference(p<0.05). As a result of this study, the second molars adjacent to the third molars that are impacted or surgically extracted had poor prognosis, so impacted third molars should be extracted in early time and the second molars are actively treated for periodontal health.

Keywords

References

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