Caries of Infancy
Conditions
Brief summary
, in this studythe investigator will compare between ready-made zirconia crowns and Computer-aided design and Computer-aided manufacturing (CAD/CAM) polymethyl methacrylate (PMMA) crowns to overcome the disadvantages of ready-made zirconia crowns.
Interventions
OTHERpreparation of the tooth to receive ready made zirconia crown
Occlusal reduction 1 to 2 mm using flame bur . Open the interproximal contacts. The tooth should be reduced circumferentially by approximately 0.5-1.5mm . The preparation margin should be carefully extended and refined to a feather-edge approximately 1-2mm subgingivally . Crown size will be determined using try in kit .
OTHERpreparation of the tooth to receive CAD CAM PMMA custom made crown
* Open the interproximal contacts . * The tooth should be reduced circumferentially by approximately 0.5-1mm . * The preparation margin should be carefully extended and refined to a feather- edge approximately 1-2mm subgingivally . * Rubber base impression will be taken by BMS additional silicone kit to the prepared tooth and will be sent to the laboratory to be scanned and to design the crown . * The final crown will be cemented using glass ionomer cement .
Sponsors
Adel Sherif Mostafa Rehab
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)
Eligibility
Sex/Gender
ALL
Age
4 Years to 8 Years
Healthy volunteers
Yes
Inclusion criteria
A- Inclusion Criteria: 1. Primary molars indicated for crown restoration (pulp treated molars indicated for crown 2. Co-operative child (Frankel scale +ve and ++ve) 3. The age ranged from 4 to 8 years regardless of sex or socioeconomic background. B-
Exclusion criteria
- 1. Badly decayed non-restorable tooth indicated for extraction. 2. Patients with parafunctional habits like bruxism. 3. Systemic diseases with oral manifestation or blood diseases.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Gingival condition | in 6 months | Löe & Silness gingival index |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| gingival bleeding | 6 months | Papilla Bleeding Index |
Countries
Egypt
Outcome results
None listed