The purpose of this study is to evaluate and compare the aesthetic definitive outcome of 1. Three different implant designs; and 2. Two different times of restoration, namely immediate and conventional restoration. The null hypothesis is that…
ID
Bron
Verkorte titel
Aandoening
Dental implant, single-tooth
Ondersteuning
- Nobel Biocare
Onderzoeksproduct en/of interventie
Uitkomstmaten
Primaire uitkomstmaten
Esthetic Index according to Meijer et al. 2005.
Achtergrond van het onderzoek
There are different dental implant systems available specially designed for the replacement of a missing tooth in the aesthetic zone. They differ in surface characteristics and design. There are only a few studies that address the aesthetics of single-tooth replacements and even no prospective clinical trials have been published comparing the aesthetic outcome of different types of implant designs. For instance, the influence of the shape and surface of the collar of the implant on the aesthetic result has not yet been researched. Furthermore, no studies have focused on the aesthetic result of immediately restored dental implants in the anterior zone in comparison with conventionally restored implants.
The purpose of this study is to evaluate and compare the aesthetic definitive outcome of (1) three different implant designs, and (2) two different times of restoration, namely immediate and conventional restoration. The null hypothesis is that there are no differences in the definitive aesthetic outcome of different implant designs or times of restoration.
Doel van het onderzoek
The purpose of this study is to evaluate and compare the aesthetic definitive outcome of
1. Three different implant designs; and
2. Two different times of restoration, namely immediate and conventional restoration. The null hypothesis is that there are no differences in the definitive aesthetic outcome of different implant designs or times of restoration.
Onderzoeksproduct en/of interventie
Patients are randomly assigned to the following study groups:
Group I: a dental implant of the ‘NobelReplace Tapered’ system is inserted in the anterior zone of the maxilla. After an osseointegration period of three months a temporary restoration is made;
Group IIA: a dental implant of the ‘NobelReplace Groovy’ system is inserted in the anterior zone of the maxilla. Within 24 hours a temporary restoration is placed;
Group IIB: a dental implant of the ‘NobelReplace Groovy' system is inserted in the anterior zone of the maxilla and a temporary restoration is made after three months;
Group III: a dental implant of the ‘NobelPerfect’ system is inserted in the anterior zone of the maxilla and a temporary restoration is made after three months.
Publiek
Hanzeplein 1
L. Hartog, den
Hanzeplein 1
Groningen 9713 GZ
The Netherlands
L.den.hartog@kchir.umcg.nl
Wetenschappelijk
Hanzeplein 1
L. Hartog, den
Hanzeplein 1
Groningen 9713 GZ
The Netherlands
L.den.hartog@kchir.umcg.nl
Belangrijkste voorwaarden om deel te mogen nemen (Inclusiecriteria)
1. The patient is 18 years or older;
2. The missing or lost tooth is an incisor (central or lateral), a canine or a first bicuspid in the maxilla. The adjacent teeth are natural teeth;
3. 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;
4. The implant site must be free from infection;
5. Adequate oral hygiene (modified plaque index and modified sulcus bleeding index ¡Ü 1);
6. Sufficient mesio-distal, bucco-lingual, and interocclusal space for placement of an anatomic restoration;
7. If necessary, the temporary restoration can be designed free from occlusal contact;
8. The patient is capable of understanding and giving informed consent.
Belangrijkste redenen om niet deel te kunnen nemen (Exclusiecriteria)
1. Medical and general contraindications for the surgical procedures;
2. Presence of an active and uncontrolled periodontal disease;
3. Presence of pathologic microflora;
4. Bruxism;
5. Site of implant placement is an extraction wound younger than three months;
6. Smoking (patients who stop smoking six weeks before the operation can be included);
7. A history of local radiotherapy to the head and neck region.
Opzet
Deelname
Opgevolgd door onderstaande (mogelijk meer actuele) registratie
Geen registraties gevonden.
Andere (mogelijk minder actuele) registraties in dit register
Geen registraties gevonden.
In overige registers
| Register | ID |
|---|---|
| NTR-new | NL382 |
| NTR-old | NTR422 |
| Ander register | : N/A |
| ISRCTN | ISRCTN37243042 |