Clinical Research Directory

A Study of Certain Prevail Implants Used for the Preservation of Crestal Bone in Short Fixed Bridge Cases.

This prospective, randomized study will evaluate the performance of the Osseotite Certain Prevail implant when compared to that of the non-lateralized version of the implant. Study (null) hypothesis: the crestal bone changes that take place after placement and loading of the Osseotite lateralized implants will be the same as for a similar but non-lateralized Osseotite Certain implant.

A Study of Osseotite Certain Prevail Implants Used to Support Short Fixed Bridges With Immediate Occlusal Loading.

This prospective, multicenter study evaluates the performance of the Osseotite Prevail implant when to support a short fixed bridge with immediate occlusal loading, providing the patient with the use of a temporary prosthesis until the final prosthesis is made. Study (null) hypothesis: This is an observational study in which no concurrent control group will be observed. Results of the study will be compared with the performance of other Osseotite implants from published Osseotite multicenter studies.

A Prospective Study Evaluating the Performance of Nanotite Osseotite Implants When Placed by Graduate Student Programs

This study will evaluate the contributions of the Nanotite implant design when used by graduate students in their first year of placing implants.

Clinical Performance of Three Different Restorative Materials

The clinical performance of a bioactive composite (alkasite-based), a nanohybrid resin composite and a bulk-fill resin composite in class II restorations will be evaluated and compared. After recruiting participants with at least 3 approximal caries lesions, all restorations will be placed by a single clinician. All caries lesions will be removed before restoring. Cavities will be divided into three groups: a bioactive composite \[Cention Forte Ivoclar Vivadent, Schaan, Liechtenstein\], a nanohybrid resin composite \[Tetric N-Ceram2 (Ivoclar Vivadent, Schaan, Liechtenstein)\] and a bulk-fill resin composite \[Tetric N-PowerFill2 (Ivoclar Vivadent, Schaan, Liechtenstein)\], All restorative procedures will be conducted according to manufacturers' instructions. Restorations will be scored using FDI criteria after a week (baseline) 6, 12, 24, 36 and 48 months. Descriptive statistics will be performed using chi-square tests.

Clinical Evaluation of a Bioactive Material

The clinical performance of a bioactive composite and a posterior resin composite in class II restorations will be evaluated and compared. After recruiting participants with at least 2 approximal caries lesions, all restorations will be placed by a single clinician. All caries lesions will be removed before restoring. Cavities will be divided into two groups: a bioactive composite \[Cention N, Ivoclar Vivadent, Schaan, Liechtenstein (CN)\] and a posterior resin composite \[G-ænial Posterior (GC, Tokyo, Japan) (GP)\] All restorative procedures will be conducted according to manufacturers' instructions. Restorations will be scored using FDI criteria after a week (baseline) 6, 12, 24, 36 and 48 months. Descriptive statistics will be performed using chi-square tests.

Clinical Evaluation of a Restorative Glass Ionomer and a Bulk-fill Composite Resin

The clinical performance of a restorative glass ionomer and bulk-fill resin composite in class II restorations will be evaluated and compared. After recruiting participants with at least 2 approximal caries lesions, all restorations will be placed by a single clinician. All caries lesions will be removed before restoring. Cavities will be divided into two groups: a restorative glass ionomer \[Equia Forte HT, GC, Tokyo, Japan (EHT)\] and bulk-fill composite resin \[SonicFill2, Orange, CA, USA (SBF)\] All restorative procedures will be conducted according to manufacturers' instructions. Restorations will be scored using modified United States Public Health Service (USPHS) criteria after a week (baseline) 6, 12, 24, 36 and 48 months. Descriptive statistics will be performed using chi-square tests.

Comparison of Piezoelectric and Conventional Surgery for Germectomy of the Lower Third Molar

The main objective of the study is to compare the effects of the piezoelectric surgery and the traditional technique on soft tissue edema in patients undergoing bilateral germectomy of mandibular third molars