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KMID : 0363020030330030383
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Journal of Korean Academy of Periodontology
2003 Volume.33 No. 3 p.383 ~ p.393
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A Retrospective study on upper single tooth implants
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조수진
이근우/조규성/문익상
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Abstract
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The aim of this retrospective study was to compare the amount of marginal bone loss between upper anteri-
or area and upper posteror area with 71 upper single-tooth restorations on 2 siage machined Brdnemark
implants since Jan 1995, The second aim was to compare the bone defect group which had dehiscence and
fenetration and the others in the upper anterior region, The results were as follows.
1. The most frequent reason of missing tooth in the upper anterior region was trauma by 61%, While upper
posterior region showed various reasons such as congenttal missing, advanced periodonits, trauma,
2, Periimplantitis with fistula occurred 1 of 41 implants in the upper anterior group in 1 year after loading
and 2 of 32 implants in the upper posterior group failed before loading. The 1 year success rate of upper
anterior group was 97.56 %, and 93,75 % for upper posterior group,
3. The mean marginal bone loss in the upper anterior group was 0,44 0,25 mm, while 057 032 mmin
the upper posterior group, There was stastically significant difference in the amount of mean marginal
bone loss (P(0.05).
4. The mean marginal bone loss of bone defeect group was 0,40+ 0,10 mm at one year, and 0,48 0.26 mm |
for the control group, No statstically significant difference of mean marginal bone loss was showen
between bone defect group and the others at implantation,
According to the results, the upper anterior region showed less marginal bone loss than the upper posterior |
region, In case of missing single upper tooth, careful consideration on recipient residual ridge to determine
proper implant diameter and length, sufficient healing time, proper loading would lead to implant success.
Single tooth implants in the maxilla seemed to be an altemative to fixed parial dentures without damage to
adiacent teeth.
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KEYWORD
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bone defect, marginal bone loss, single tooth implant, success rate
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