Clinical Outcomes of Premolars Restored With Ceramic Vonlay Restorations Versus Onlay Using Modified USPHS Criteria

Not Applicable

• Conditions: Clinical Performance of Ceramic Vonlays
• Interventions: Procedure: Onlay Ceramic restorations; Procedure: Vonlay Ceramic restorations

• Registration Number: NCT05114122
• Lead Sponsor: Cairo University

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

Study Timeline

• Study Start: 2021-01-01
• Study First Submitted: 2021-10-27
• Status Verified: 2021-11
• Study First Submitted QC: 2021-11-06
• Last Update Submitted: 2021-11-06
• Study First Posted: 2021-11-09
• Last Update Posted: 2021-11-09
• Primary Completion: 2021-12
• Study Completion: 2022-01

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 26

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Onlay lithium disilicate ceramic restorations	Onlay 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
Vonlay lithium disilicate ceramic restorations	Vonlay 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

Primary Outcome Measures

Name	Time	Method
Fracture	change from baseline at 3,6,9,12 months	assessed according to modified USPHS criteria (Alpha, Bravo)

Secondary Outcome Measures

Name	Time	Method
Marginal discoloration	0,3,6,9,12 months	assessed according to modified USPHS criteria (Alpha, Bravo and Charlie)
Marginal integrity	0,3,6,9,12 months	assessed according to modified USPHS criteria (Alpha, Bravo, Charlie and Delta)

Trial Locations

Locations (1)

Faculty of Dentistry, Cairo University, 11 El-Saraya St. El Manial; 🇪🇬 Cairo, El Manial, Egypt