Aandoeningen aan het gebit Missing tooth
Conditions
Interventions
For this study, three different study groups are introduced. Patients allocated
to the first study group were treated with a Replace Select Tapered implant
(Nobel Biocare AB, Gothenburg, Sweden) (sm
Sponsors
Universitair Medisch Centrum Groningen
Eligibility
Age
18 Years to 99 Years
Inclusion criteria
Inclusion criteria: -The patient is 18 years or older; -The missing or lost tooth is an incisor (central or lateral), a canine or a first premolar in the maxilla. The adjacent teeth are natural teeth; -Sufficient healthy and vital bone to insert a dental implant with a minimum length of 10 mm and at least 3.5 mm in diameter. In case of insufficient bone volume, a bone augmentation procedure will be performed with autologue bone. After three months of healing, the dental implant will then be inserted; -The implant site must be free from infection; -Adequate oral hygiene (modified plaque index and modified sulcus bleeding index
Exclusion criteria
Exclusion criteria: -Medical and general contraindications for the surgical procedures; -Presence of an active and uncontrolled periodontal disease; -Bruxism; -Site of implant placement is an extraction wound younger than three months; -Smoking (patients who stop smoking six weeks before the operation can be included); -A history of local radiotherapy to the head and neck region.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Changes in marginal peri-implant bone loss | — |
Secondary
| Measure | Time frame |
|---|---|
| Clinical performance, namely: -Implant survival. -Implant Crown Aesthetic Index. One month and one and five year after placement of the final restoration, the Implant Crown Aesthetic Index is assessed as described by Meijer et al., 2005. The aesthetic index is assessed on standardized photographic images, taken according to Meijndert et al., 2004. -Modified Plaque-index and Modified Bleeding-Index (Mombelli et al., 1987), Gingiva index (Loë and Silness, 1963). These parameters are evaluated pre-operative, one month and one and five year after placement of the definitive restoration. The adjacent teeth are counted as well in the assessments. -Papil-index (Jemt et al., 1997). This index is evaluated pre-operative, one month and one and five year after definitive restoration. The Papil-index is assessed on the standardized photographic images. -Probing depth. Probing of the implant and the adjacent teeth is performed at three sites, buccodistal, buccomedial, buccomesial. The probing depth is measured pre-operative, one month and one and five year after placement of the definitive restoration. -Recession. The degree of recession is measured on the standardized photographic images. Therefore the distance is measured between the most cervical and mediobuccal point of the marginal gingiva perpendicular to the incisal edge of the definitive crowns one week and one year after placement. The adjacent teeth are counted as well in the measurements. Also the distance between the most coronal point of the mesial and distal papil perpendicular to the incisal edge of the natural adjacent tooth is determined. This is done on the standardized photographic images taken pre-operative, one month and one and five year after definitive restoration. -Width of keratinized epithelium. The width in millimetres of keratinized epithelium is measured pre-operative, one month and one and five year after the definitive restoration has been placed. This is done by using | — |
Countries
Netherlands
Outcome results
None listed