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KMID : 0370819920070010148
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Yonsei Journal Dental Science
1992 Volume.7 No. 1 p.148 ~ p.169
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THE EFFECTS OF POLYGLACTIN 910 MESH IN CONJUNCTION WITH REPLAMINEFORM HYDROXYAPATITE OR RESORBABLE CALCIUM CARBONATE ON THE PERIODONTAL HEALING RESPONSES IN DOGS.
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Abstract
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The guided tissue regeneration is being used for regeneration of periodontal tissue destructed by periodontal disease. This treatment has resulted in the formation of substantial amounts of new attachment, but they do not encourage regeneration
of
lost
alveolar bone. Therefore, and additional approach to guided tissue regeneration should be aimed at encouraging new bone regeneration. The purpose of this study was to evaluate the effect of resorbable polyglaction 910 mesh combined with porous
replamineform hydroxyaptite and porous resorbable calcium carbonate on the regeneration and healing of periodontal tissue as compared to barrier technique alone.
For this study, after inducing chronic periodontal inflammation by ligation orthodontic elastic threads around mandibular premolars in adult dogs, the flap operation was performed.
@ES And then, three groups were divided as follows.
@EN 1. In case only polyglactin 910 mesh was covered after flap operation(control group). 2. In case polyglactin 910 mesh and porous replamineform hydroxyapatite were used after flap operation(experimental group I). 3. In case polyglactin 910
mesh
and
porous resorbable calcium carbonate were used after flap operation(experimental group II). After 1, 3, 6, 12, 26, 32 and 56 week, the healing effect for each case were observed and compared histologically and the following results were obtained
1. The apical migration of the junctional epithelium was minimal in the control group and experimental group I, II during the whole period of experiment.
2. The inflammatory cell infiltration in the connective tissue was heavy at the 1st week in the control group and experimental group I and II, began decreased from the 3rd week and decreased rapidly from the 6th week.
3. Polyglactin 910 mesh began to be absorbed from the 3rd week, completely absorbed at the 12th week and was not observed thereafter.
4. The new cementum formation began to be observed from the 6th week in the control group and experimental group I, II.
5. The arrangement of connective tissue fibers to the root surface was irregular until the 6th week but was functional the after 12th week in the control group and experimental group I, II.
6. The new bone formation began form the 3rd week at the notch base in the control group and experimental group I, II. But the bone growth above the notch began from the 32nd week in the control group, from the 12th week in the experimental
group
I and
from the 6th week in the experimental group II.
7. The ankylosis of the implanted material and new bone was mostly formed at the 56th week in the experimental group I, and observed from the 26th week in the experimental group II.
8. The surface of implanted material was even in the experimental group I, but was resorbed irregularly in the experimental group II with the lapse of time.
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KEYWORD
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