Peri-implant marginal bone changes with implant-supported metal-ceramic or monolithic zirconia single crowns: A retrospective clinical study of 1 to 5 years.

Statement Of Problem: Monolithic zirconia has excellent mechanical and biologic properties. However, evidence of the clinical properties of implant-supported monolithic zirconia prostheses is limited.

Purpose: The purpose of this retrospective clinical study was to compare the peri-implant marginal bone changes of metal-ceramic and monolithic zirconia single crowns in the posterior region after prosthetic loading.

Comparative Evaluation of Endo-sinus Bone Augmentation After Osteotome Sinus Floor Elevation Without Grafting Using Two Radiographic Methods.

Purpose: Using panoramic radiograph and CBCT to compare the measurement errors of the residual bone height in the same site before implant placement in the posterior maxilla and endo-sinus bone gain after osteotome sinus floor elevation without grafting, and to evaluate endo-sinus bone augmentation before stage-two surgery with CBCT. Also, some related factors of new bone formation in the sinus were analyzed, such as small bone block elevated by osteotome at the implant apex intraoperatively.

Materials And Methods: Patients were enrolled in the retrospective study; dental implants were placed in the maxillary posterior region using osteotome sinus floor elevation without grafting.