Clinical Performance of Ceramic Vonlays
Conditions
Keywords
Ceramics, vonlay, onlay, fracture
Brief summary
Evaluation the clinical performance of premolars restored with ceramic vonlays versus onlays using modified USPHS criteria after follow-up period of 0,3,6,9,12 months
Detailed description
two groups of patients with vital premolars indicated for fixed restorations will be selected according to special inclusion criteria (n=13) in each group (total of 26). one group will receive minimally invasive cavity preparations for posterior indirect restorations either vonlay or onlay according to each group the patient will be assessed using Modified USPHS Criteria at 0,3,6,9,12 months regarding fracture, marginal integrity and marginal discoloration
Interventions
PROCEDUREVonlay Ceramic restorations
vonlay is a hybrid of an onlay with an extended buccal veneer surface for use in bicuspid regions where there is mostly enamel to bond to. The vonlay is less invasive, more readily repairable, less technique-sensitive to attain adequate bonding, and will leave sounder tooth structure remaining if further treatment is required in the future
PROCEDUREOnlay Ceramic restorations
Onlays are used to restore large areas of decay and also used to replace old restorations, whether they are defective amalgam fillings, old cast-gold onlays, or fabricated from some other material
Sponsors
Cairo University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)
Masking description
Double blinding
Eligibility
Sex/Gender
ALL
Age
25 Years to 44 Years
Healthy volunteers
Yes
Inclusion criteria
1. Age range of the patients from 25-44 years old, who could read understand and write to sign the consent by himself /herself 2. Have no active periodontal or pulpal diseases, have teeth with good restorations.(19) 3. Psychologically and physically able to withstand conventional dental procedures 4. Patients with teeth problems indicated for onlay and vonlay (premolars). 1. Decayed teeth. 2. Teeth restored with large filling restorations. 5. Able to return for follow-up examinations and evaluation.
Exclusion criteria
1. Patient less than 25 or more than 44 years. 2. Patient with active resistant periodontal diseases. 3. Patients with poor oral hygiene, high caries risk and uncooperative patients. 4. Pregnant women. 5. Patients in the growth stage with partially erupted teeth. 6. Psychiatric problems or unrealistic expectations. 7. Lack of opposing dentition in the area of interest. 8- The presence of a removable or fixed orthodontic appliance, signs of bruxism or clenching, the absence of more than one unit in the posterior region
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Fracture | change from baseline at 3,6,9,12 months | assessed according to modified USPHS criteria (Alpha, Bravo) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Marginal integrity | 0,3,6,9,12 months | assessed according to modified USPHS criteria (Alpha, Bravo, Charlie and Delta) |
| Marginal discoloration | 0,3,6,9,12 months | assessed according to modified USPHS criteria (Alpha, Bravo and Charlie) |
Countries
Egypt
Contacts
Primary ContactMohamed Abdel Aziz Hazzaa, PHD
Backup ContactMohamed Abdel Aziz Hazzaa, PHD
Outcome results
None listed