The main problem introduced in this study is the aggressive reduction needed for ready-made zirconia crowns to be passively fitted. In addition, its relatively expensive cost and wear of the opposing tooth structure. In this study, different crown materials will be introduced, such as customized zirconia crowns and novel 3D printed resin crowns who may offer better adaptability and gingival health and are relatively cost effective. The proposed study will help in increasing studies of different crown materials for primary teeth
Healthy children within age range of 5-8 years old
Upper and lower primary second molars
Vital primary second molars
Cooperative children Frankl scale 3 (positive) and 4 (definitely positive)
Radiographic radiolucency related to the furcation and periapical area or any evidence of root resorption
Deep bite
More than 2 walls lost due to caries
Presence of parafunctional habits