Active clinical trials for "Jaw, Edentulous, Partially"

The purpose of this study is to see if OsseoSpeed™ implant 6 mm long is effective for rehabilitation of edentulism and if so, how it compares with OsseoSpeed™ implant 11 mm long. The primary hypothesis is that the alteration in bone level is equal in patients randomized to 6 mm as to patients randomized to 11 mm implants.

In this prospective case series study, 20 patients with an implant-borne single crown following early implant placement with simultaneous contour augmentation will be followed for 10 years. Clinical, radiologic, and esthetic parameters will be assessed. In addition, cone beam computed tomography (CBCT) will be used at 10 years to examine the facial bone wall and compared to the 6 year data.

40 consecutive adult patients, requiring the insertion of dental implants in the aesthetic area (from second premolar to second premolar) will be enrolled in the study. At the time of surgery, a full thickness flap will be elevated, the implant bed will be prepared according to the manufacturer's instruction and the implants will be then seated into the bone. T0 corresponds to the time of implant insertion, T1 to the time of healing abutment's connection (T0=T1 for single stage implants), and T2 corresponds to 1-year follow-up from healing abutment's connection. Cone Beam Computed Tomography (CBCT) scans will be taken immediately after abutment connection (T1) and 1-year after (T2). The midsagittal cut of each implant will be identified, and measurements will be made at predetermined levels. Horizontal facial bone thickness (HFBT) and Vertical facial bone level (VFBL) will be measured. HFBT will be measured at 0, 3, 6 and 9 mm apical to the implant platform. VFBL wil be the perpendicular distance from the implant platform to the most coronal point of the facial bone. Changes between T1 and T2 will be calculated.

Objectives: The aim of the study was to compare histological and histomorphometric results of six bone substitute materials used as graft in two-stage maxillary sinus augmentation model, after 6-month-healing.

The trial is designed as a consecutive enrollment prospective one-center study. A minimum of 30 patients will be included in the study. At implant installation, the patient will be randomized to receive one of the two types of implants (Control: internal hexagon connection implants (CON.INT); Test: Morse taper connection implants (MT-12)). Samples of peri-implant crevicular fluid (PICF) and intrasulcular plaque will be collected at -21 (second-stage surgery), -14 (impressions), 0 (Baseline: prosthesis delivery), 7 days and 1, 3, 6, 12 months. Prosthesis will be fabricated and delivered as usual, i.e., approximately two weeks after the impressions are taken.

To compare a flapless technique of alveolar ridge preservation to a flap technique to determine if preserving the periosteal blood supply would prevent loss of crestal ridge width and height.

Ridge Preservation Comparing the Clinical and Histologic Healing of Flap vs. Flapless Approach to Grafting

Ridge Preservation Comparing the Clinical and Histologic Healing of Membrane vs. no Membrane Approach to Grafting.

The study, with the ASTRA TECH Implant System, is comparing short implants (OsseoSpeed™) to standard length implants (OsseoSpeed™) in combination with bone grafting. The hypothesis is that the use of short implants in posterior maxilla with inadequate bone is as safe and predictable as placing standard length implants in combination with bone augmentation.

In this study a tooth that needs to be extracted will be replaced by an implant (artificial root) placed at the same appointment as the extraction. The investigators want to observe how the gums change shape with healing in two different scenarios: If the soft tissue around your tooth is thin, following extraction and implant placement an extra soft tissue graft (taken from your palate) in the area in order to increase the thickness of your gums after healing. If the soft tissue around your tooth is thick, the implant will be placed without a soft tissue graft. Previous studies have shown that both methods work and can give good results. In fact the two methods are used routinely but they have never been compared objectively to one another in the same research study. The main purpose of this study is to evaluate if there is any difference in terms of esthetic outcomes between these two treatment modalities after a crown has been placed on the implant.