Kouchi, R. (Roena) (2016) 3D evaluatie van de centrale papil van de bovenkaak. thesis, Dentistry.
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Abstract
Aim: The purpose of this study was to evaluate the factors associated with the papilla fill in the interdental space of the maxillary central incisors, using a non-invasive method with 3D scans. Methods: Of 81 patients (age 10 – 56 years), a photo, an intra-oral scan and a CBCT were collected from a database. The intra-oral scan was fused with the CBCT by the orthodontic software Romexis, making it a 3D scan of the hard and soft periodontal structures. Papilla fill between de maxillary central incisors was scored by using the Papilla Presence Index. (1) Distance from the contact point to the crest of the alveolar bone, (2) the interproximal distance at the GCG and (3) at the top of the alveolar bone, (4) tooth shape, (5) thickness of the interdental gingiva, (6) average thickness of the gingiva around a maxillary central incisor, (7) sex and (8) age, were recorded from the fused scans. By combining factors, a 3D analyse was made to evaluate the coherence of factors and their influence on the papilla fill. Statistic analyses included a logistic regression in SPSS. Results: The factors age, distance from the contact point to the crest of the alveolar bone, tooth shape en thickness of the gingiva at GCG showed significant effect on the papilla fill (p<0.05) when evaluated as a single factor. After the logistic regression only the distance from the contact point to the alveolar crest showed a significant effect. When the distance was 4.04mm or less the papilla was always present (OR=0.275). The chance of having a fully filled interdental space reduced with a factor 3.6 for every mm the vertical distance became larger. Combined factors seem to have a bigger influence on the papilla fill than single factors. When combined with the horizontal distance and the interproximal distance, the gingiva thickness at GCG showed a significant influence. 3D analyses showed no significant effect on the papilla fill. Conclusion: The distance from the contact point to the crest of the alveolar bone is the most important factor influencing the papilla fill. When the distance is 4.04mm or less the papilla is always present. This study supports the hypothesis that combined factors may have a bigger influence on the papilla fill than single factors. More research is required to confirm this hypothesis.
| Item Type: | Thesis (Thesis) |
|---|---|
| Supervisor name: | Marco Gresnigt and Geerten-Has Tjakkes |
| Faculty: | Medical Sciences |
| Date Deposited: | 25 Jun 2020 10:54 |
| Last Modified: | 25 Jun 2020 10:54 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/1500 |
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