Vis, G. (2010) Biologische Breedte : Het valideren van een methode om, met behulp van een op de bite-wing foto te projecteren standaard vlak, een betrouwbare indicatie van de biologische breedte aan de mesiale en distale zijde van een eerste molaar te verkrijgen. thesis, Dentistry.
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Abstract
Introduction/aim of the study: The reason for undertaking the present study is the difficulty to map the biological width with the present method of measurement. This study aims to find a method to give a reliable indication of the biological width on the mesial and distal side of a first molar and to validate this by use of a standard square projected on a bite-wing photo. Material and method: two bite-wing photos are made of each first molar of dry teethed skulls to analyze these for a test-retest procedure. In total there are 48 bite-wing photos of 24 elements to be assessed. Two squares are projected on each element from the bone comb towards the occlusale surface. One square indicates the estimated actual biological width and is calculated using the magnification of the photo. The other square indicates the standard indicative square in which an average has been used of all the bite-wing photo's that are made. By use of this method it is possible to indicate the difference between the two squares. A clinical relevant difference of 0,3mm was chosen. The data has been collected and entered into a codebook. Statistical tests (reliability interval, an intraclass correlation coefficient and at-test) were performed using SPSS. Results: The reliability interval lies between 1,98 and 2,07mm. The indicative standard square in the mandible is in 87% of cases bigger than 2,00mm and in the maxilla in 86% smaller than 2mm. The found intraclass correlation coefficient is 0,7 and the similarity between first and second bite-wing photo is adequate to good. The smallest detectable error is O,lSmm. This is well below the clinically relevant difference, and therefore acceptable. Discussion: The found difference between the maxilla and the mandible may be caused by anatomical factors. Furthermore, there are many recommendations for further research. Conclusion: The method is suitable to give the biological width on mesial and distal side of a first molar, by use of the bite-wing photo. It is important to conduct further investigation to map the effective usability and expansion of a possible computer product.
| Item Type: | Thesis (Thesis) |
|---|---|
| Supervisor name: | Begeleiders: and Huddleston Slater, Dr. J.S.S sectie Gnatologie and Cune, Prof. Dr. M.S. sectie Orale Functieleer |
| Faculty: | Medical Sciences |
| Date Deposited: | 25 Jun 2020 10:43 |
| Last Modified: | 25 Jun 2020 10:43 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/442 |
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