Evaluation of Conservative Management of Teeth With Deep Cavitated Carious Lesions Using Three Different Lining Materials-a Randomized Clinical Trial

p-Patients having Permanent posterior teeth with very deep carious lesions I 1 calcium silicate cement I 2= resin-based tricalcium silicate (TheraCal LC) C- chemically Glass Ionomer cement O- Outcome name Measuring Device Measuring Unit Primary1ry postoperative pain 1- Refrigerant spray (endo frost ) 2- Percussion (Marchi et al. 2006) 3- Palpation Binary Secondry2ry Peri-apical pathosis Digital radiograph (Hashem et al. 2015) Binary

T- one month, three months, six months,12 months,24 months evaluation S-Randomized clinical trial 7- Trial design: Randomized Controlled Trial. Trial type: single blind parallel arms design Trial framework: Equivalence frame, Allocation ratio: 1:1. Research question In patients having permanent posterior teeth with very deep carious lesions will calcium silicate cement or resin-based tricalcium silicate (TheraCal LC) in comparison to chemically cured glass ionomer cement result in clinical and radiographical success? Methods: Participants, interventions, and outcomes 8-Study Settings: This clinical trial will be held in the Faculty of Oral & Dental Medicine Cairo University, Egypt.

9- Eligibility criteria:

1. Eligibility Criteria of participants:

Inclusion Criteria of participants:

1. Patients male or female older than 18 y in good general health
2. A minimum of 1 deep carious lesion penetrating three-quarters or more into the dentine as identified with the periapical (PA) radiograph; Clinically according to International Caries Detection and Assessment System (ICDAS II) score 4
3. Clinical symptoms of reversible pulpitis
4. Positive pulp response to electric pulp test or thermal stimulation
5. No PA changes viewed on PA radiograph