Sahana, R (2022) A Comparison between Visual, Digital and Digital Photography Assisted Shade Selection: A Clinical study. Masters thesis, Tagore Dental College and Hospital, Chennai.
Full text not available from this repository.Abstract
INTRODUCTION The most important and challenging aspect of aesthetic dentistry is accurate shade matching. Increased patient awareness has led to an increased demand for esthetic restorations. The second factor for ceramic restoration remake is claimed to be an error in shade select ion, while the primary reason being the difficulty with tooth preparation and impression making. However the problem can be dealt with by proper understanding and knowledge of color. The color of an object is a characteristic given by the light transmitted from the object to the human eye and is dependent on the light wavelength and the visual percept ion which is a physiological phenomenon based on the visual system. MATERIALS AND METHOD: Forty dental students from Tagore dental college of age groups 18-25 were selected .Maxillary right central incisor was chosen for shade matching after professional oral prophylaxis. Before undergoing shade select ion procedure the teeth are dried using cot ton. Discolored teeth, restorations, endodontically treated teeth, extrinsic stains, non-vital or fractured teeth, presence of crowns and veneers are excluded. The study was proceeded after acquiring the necessary approval from the Research and Ethical committee of the Institution and an informed consent from the students. Before undergoing shade select ion procedure, to avoid discrepancy in conventional method of shade select ion, Ishihara test for Color deficiency was performed for the clinicians. Color assessment can undergo subjective variability. Literature also has stated that the shade is influenced by several external factors such as surrounding illumination, environment, the tooth including its textures and layers, the dentist’s personal judgment, and patient factors. Hence the standardizat ion protocol was followed for evaluating the shade selection. RESULTS: Analysis done with Conover p-values, further adjusted by the Holm FWER method. CONCLUSION: Al though none of three techniques showed 100% concurrence with the shade selected using intraoral scanner , the visual shade select ion using artificial light had the highest concurrence with shade selected using intraoral scanner. Hence i t is suggested that the visual shade select ion under artificial light be used when intraoral scanner is not available for shade selection. 2. For the shades selected, the conventional visual method of shade select ion had the lowest concurrence values with shade selected using intraoral scanner (male observer). Whereas for the female observer similar concurrence were observed between visual and digital photography assisted shade select ion and the shade selected using intraoral scanner. 3. Visual shade select ion with artificial light is therefore recommended as a simple and effective method of shade select ion even with the emergence of newer methods assisted with digital photography.
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | 241911601 |
| Uncontrolled Keywords: | Visual, Digital, Digital Photography Assisted Shade Selection. |
| Subjects: | DENTAL > Prosthodontics and Crown and Bridge |
| Depositing User: | Subramani R |
| Date Deposited: | 08 May 2022 15:18 |
| Last Modified: | 10 May 2022 15:18 |
| URI: | http://repository-tnmgrmu.ac.in/id/eprint/19964 |
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