incisal abrasion. Porcelain veneer is planned with modification to cover incisal edge. veneer should end:
- a. fourth lingualy 0.5 mm before centric occlusal.
- b. fourth 1.5 before centric occlusion
- c. fifth 1.5 before centric occlusion.
Out of the options you provided, the most appropriate choice for the veneer to end is c. fifth, 1.5 mm before centric occlusion.
Here's why:
- Option a (fourth lingualy, 0.5 mm before centric occlusion):
Placing the veneer too far lingually can have several drawbacks. It might negatively impact the patient's speech or even cause aesthetic issues, making the teeth appear bulky or unnatural. Additionally, this option wouldn't offer sufficient coverage for the incisal edge, leaving it vulnerable to chipping or fracture.
- Option b (fourth, 1.5 mm before centric occlusion):
While this option provides slightly more coverage for the incisal edge compared to option a, it might still leave a small portion exposed. This exposed area could be susceptible to damage, compromising the longevity and functionality of the veneer.
- Option c (fifth, 1.5 mm before centric occlusion):
This option strikes the best balance between adequate protection and aesthetics. Ending the veneer 1.5 mm before centric occlusion on the fifth lingual surface provides sufficient coverage for the incisal edge, reducing the risk of chipping or fracture. Additionally, it maintains a more natural appearance and preserves optimal tongue function.
Therefore, based on these considerations, option c is the most recommended choice for the veneer termination point. However, it's important to remember that the final decision should be made by a qualified dental professional who can assess the patient's individual needs and anatomy. They can take factors like bite alignment, existing restorations, and desired aesthetic outcome into account to determine the optimal placement and design of the veneer.
