Abstract
This research quantitatively compared the retention and resistance of various designs of maxillary premolar partial veneer crown preparations. Crowns were evaluated with and without proximal boxes and occlusal pins. In the absence of boxes or grooves, pins markedly enhanced both retention and resistance. In the presence of proximal boxes, pins contributed only to retention and had no significant effect on resistance. If pins are used, the cement should be spiralled into the pin hole. As resistance is usually the more crucial parameter in preparation designs, it seems that wherever efficient axial modifications can be incorporated, the pinhole modification may be of little advantage.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
