Prospective randomised clinical trial on the fabrication of silicate ceramic crowns with two different impression systems, digital and conventional.
- Conditions
- Indication for a single-tooth crown reconstruction in the posterior region (premolar or molar)
- Registration Number
- DRKS00025605
- Lead Sponsor
- ehr-, und Forschungsgebiet Computergestützte Zahnmedizin Klinik für Zahnärztliche Prothetik und Biomaterialien des Universitätsklinikums Aachen
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Recruiting stopped after recruiting started
- Sex
- All
- Target Recruitment
- 2
Signed informed consent form
- Patients of legal age who are mentally and physically able to understand the meaning and understand the significance and scope of the study and are able to comply with the study staff.
- Good health status according to the ASA Physical Status Classification one or two (ASA 2019).
-Indication for a single-tooth crown reconstruction in the posterior region (premolar or molar).
-Edentulous opposing jaw or fixed antagonistic restoration
-Good oral hygiene: parameters measured: API and SBI
API=Approximal Space Plaque Index, The sum of the soiled areas is measured in relation to the examined areas. Up to 40% means good oral hygiene
PSI=Periodontal Screening Index: The dentition is divided into 6 areas, the pocket depths (SST sulcus probing depths) are measured at 4-6 sites per tooth. The results are divided into codes, whereby the highest value (= deepest pocket) is the determining factor.
Patients with codes 0, 1 and 2 are included in the study. This means that they have pocket depths up to 3.5 mm and occasionally BOP (bleeding on probing). Bleeding sites can be induced by probing the gingival margin with a periodontal probe (BOP).
-Therapeutic periodontitis patients
-No need for treatment in the antagonist area and adjacent tooth area.
- Psychological misdirection
- Drug abuse
- Known pregnancy and breastfeeding women.
- Expected lack of compliance
- Patients incapable of giving informed consent
- Persons who are institutionalised by court order or by order of the authorities.
- Persons who are in a dependency or employment relationship with the sponsor or the investigator.
Study & Design
- Study Type
- interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Evaluation of a clinical standard by investigating the fitting accuracy of silicate ceramic crowns depending on two different impression systems, digital and conventional
- Secondary Outcome Measures
Name Time Method Investigation of the longevity, biocompatibility, patient satisfaction and aesthetics in combination with the luting material Variolink-Esthetic (Ivoclar-Vivadent) by follow-up examinations of the silicate ceramic crowns. The wear behaviour of the crowns and the antagonist teeth will also be assessed qualitatively and quantitatively.