Clinical Research Directory

prepartion:1.The mesiodistal width of the tooth will be measured using calipers and a closely fitted crown will be selected based on the measurements. 2.The tooth will be prepared similarly to stainless steel crowns (SSCs): • Occlusal reduction of approximately 1-1.5 mm will be done using a diamond bur.Mesial and distal reduction of no more than 1 mm will be performed using a No. 169L diamond bur.Depending on the tooth anatomy, either no buccal and lingual reduction will be needed, or a minimal reduction will be done. 3.All sharp line angles and corners will be smoothed to ensure proper crown fit. 4.The crown will be checked for proper fit before cementation. It will be positioned to extend 1 mm below the gingival margin. 5.The crown will be cemented using luting glass ionomer cement (GIC). The crown will be held with firm, constant pressure until the cement sets initially. 6.The marginal fit will be evaluated, and necessary adjustments will be made. 7.The occlusion will be checked.

1. Crown Selection: The mesiodistal dimension of the corresponding tooth will be measured . to select the appropriate size. 2. Occlusal Reduction: The marginal ridge of adjacent teeth will be used as a reference point and a 1.5-2 mm of occlusal reduction will be performed to allow proper crown seating. 3. Bucco-Lingual Reduction: The bucco-lingual wall will be reduced by approximately 1-1.5 mm using a flame-shaped diamond bur. 4. Interproximal Reduction: 1mm of interproximal reduction will be performed using a flame-shaped diamond bur such as a .368 or .330tapered carbide bur. 5. Feather Margin Preparation: Subgingival reduction of 1-2 mm will be done using a flame-shaped diamond bur, creating a feathered margin to achieve a passive fit. 6. Trial Fitting of the Crown: The crown will be tried in to ensure proper adaptation. until the crown fits passively and extends sub gingivally by 1-2 mm wit. 7. Glass ionomer cement will be used for cementation.