THE EFFECTS OF A MODERATE INTRUSIVE FORCE ON AFFECTED PERIODONTAL TISSUES. A FEM STUDY
Introduction. Orthodontic treatment on patients with periodontal disease is a contemporary research topic because we have to focus not only on the perfect alignment of the teeth but also on preserving and even improving the periodontal condition. Material and methods .Using the FEM Catia V5R16 so...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Romanian Society of Oral Rehabilitation
2015-10-01
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| Series: | Romanian Journal of Oral Rehabilitation |
| Subjects: | |
| Online Access: | http://www.rjor.ro/the-effects-of-a-moderate-intrusive-force-on-affected-periodontal-tissues-a-fem-study/?lang=ro |
| Summary: | Introduction. Orthodontic treatment on patients with periodontal disease is a contemporary
research topic because we have to focus not only on the perfect alignment of the teeth but
also on preserving and even improving the periodontal condition. Material and methods
.Using the FEM Catia V5R16 software we created a valid model of a mandible arch and of a
lower central incisor. The lower central incisor was created on the computer taking into
account certain specific dimensions and using a didactic real size Nissin model. Two
additional models were created with a horizontal bone loss (HBL) of 33% and 66% around
the tooth. A moderate intrusive force with the intensity of 1N was applied on the lower
central incisor models. Results and discussions. We can notice that the equivalent tensions (σ
eqv) at the level of the entire complex tooth-periodontal ligament-alveolar bone stay constant
regardless the periodontal status. In a 66% HBL case we found out that σ c records 1,776 higher
values than in no HBL case and 1,604 higher values than in 33% HBL. In a 66% horizontal
bone loss we can state that f value is 1,948 times higher than in the 33% horizontal bone loss
and 2,026 times higher than in no HBL case. Conclusions. Intrusion of the lower central
incisor consecutive to periodontal disease is a realistic and viable solution for improving the
implantation and gaining attachment. |
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| ISSN: | 2066-7000 2601-4661 |