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KMID : 0363020060360020489
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Journal of Korean Academy of Periodontology
2006 Volume.36 No. 2 p.489 ~ p.502
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A study on the periodontal status of second molar adjacent third molar
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이해두
홍기석/정진형/임성빈
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Abstract
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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.2
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KEYWORD
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periodontal status, third molar
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Listed journal information
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