Evaluation of Zirconia stock and customized implant abutments provided with composite resin crowns: a pilot study

Completed

Conditions: Vervanging van ontbrekende gebitselementen door middel van een implantaatkroon
los of oral function
Missing tooth

Registration Number: NL-OMON39901

Lead Sponsor: niversitair Medisch Centrum Groningen

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Completed

Sex: Not specified

Target Recruitment: 50

Inclusion Criteria

- patients should be over 18 years of age, in reasonable to good general health, as expressed by an ASA-score I or II (de Jong and Abraham-Inpijn, 1994);
- bone volume should allow the placement of implants with a minimum length of 8 mm and minimum diameter of 3.5 mm;

Exclusion Criteria

- Previous implant loss
- Irradiation to the maxilla or mandible
- Bruxism

Study & Design

Study Type: Interventional

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
<p>Primary outcome variables are:<br /><br>1. resistance to static loading bending strength in Newton), comparing<br /><br>experimental stock and CAD-CAM abutments to pristine implant-abutment copies,<br /><br>under the null hypothesis that they are similar (BS);<br /><br>2. patients* preference, comparing the digital or conventional impression<br /><br>technique as measured on a Visual Analogue Scale, under the null hypothesis<br /><br>that they are similar (PP).</p><br>

Secondary Outcome Measures

Name	Time	Method
<p>Secondary outcome variables relate to clinical performance of the implant and<br /><br>crown. Routine clinical parameters are compared between stock and CAD-CAM<br /><br>abutments after one year, namely:<br /><br>- Probing Pocket Depth (PPD);<br /><br>- Bleeding on marginal probing (BOP);<br /><br>- Recession of the mucosa (REC, difference between the value at placement of<br /><br>the crown and after one year).</p><br>