Jenefer Shekina, D (2020) Comparative Evaluation of the Marginal Fit and Internal Fit of Metal Laser Sintered Crowns with Direct and Indirect Scanning Techniques: An Invitro study. Masters thesis, Chettinad Dental College & Research Institute, Kanchipuram.
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Abstract
INTRODUCTION: CAD/CAM technology has evolved in dentistry and provide almost accurate restorations and prosthesis which is done by digitalized mechanical scanning. The scanners could be optical, laser, or contact scanners. The marginal and internal fits of restorations fabricated by CAD/CAM technology are better as compared with the restorations fabricated by the lost wax technique. AIM OF THE STUDY: To evaluate the marginal and internal fit of laboratory fabricated metal laser sintered crowns using direct and indirect methods of scanning. MATERIALS AND METHODOLOGY: A typhodont model in which a mandibular first molar tooth is prepared with a shoulder finish line. An intraoral scanner for direct scanning and laboratory scanner for indirect scanning technique is used for the fabrication of Metal Laser Sintered crowns. The marginal and Internal fit of the crowns are evaluated with two groups and compared with stereomicroscope. RESULT AND CONCLUSION: The results did show better marginal and internal fit in crowns fabricated by the direct method; however, the crown fabricated by the indirect method has more discrepancy, but was in the clinically acceptable limit.
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | 241711652 |
| Uncontrolled Keywords: | CAD/CAM, Intraoral Scanners, Extra oral Scanners, MLS Crowns. |
| Subjects: | DENTAL > Prosthodontics and Crown and Bridge |
| Depositing User: | Subramani R |
| Date Deposited: | 21 Feb 2021 03:10 |
| Last Modified: | 21 Feb 2021 03:10 |
| URI: | http://repository-tnmgrmu.ac.in/id/eprint/14343 |
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