• Complete caries removal from the cavity.
• The liquid of Egyptian MTA (Toothmate) will be mixed with powder according to the manufacturers' instructions.
• The capping materials will be placed with the passive application on the deepest part of the cavity. Only light pressure will be applied on the MTA mixture using a wet cotton pellet to ensure adaptation of the material onto the dentin.
• A light-cured glass ionomer cement base will be applied in the cavity .
• Selective enamel etching will be applied on enamel only.
• The one-bottle universal adhesive system bond will be applied on enamel and dentine.
• A Nano hybrid composite resin material will then be incrementally inserted into the cavities.

• Complete caries removal from the cavity.
• Gently tapping a capsule of Biodentine (Septodont) on a hard surface to loosen the powder, then opening the capsule, Detaching a single-dose container of liquid and gently tapping on the sealed cap to force all the liquid down the container, Twisting cap to open, Then Pouring 5 drops from the single-dose container into the capsule, Then Closing the capsule and Placing it on a mixing device for 30 seconds, Then Collecting Biodentine with the instrument supplied in the box.
• The capping materials will be placed with the passive application on the deepest part of the cavity.
• A light-cured glass ionomer cement base will be applied in the cavity .
• Selective enamel etching will be applied on enamel only.
• The one-bottle universal adhesive system bond will be applied on enamel and dentine.
• A Nano hybrid composite resin material will then be incrementally inserted into the cavities.

• Complete caries removal from the cavity.
• According to the manufacturers' instructions, Dispensing equal volumes of base and catalyst pastes on the parchment paper pad provided. Using a Dycal (Dentsply) Liner applicator, stirring immediately to mix thoroughly until a uniform color is achieved, complete mixing occurs within 10 seconds, using the ball-pointed Dycal Liner applicator or similar instrument, the mix will be placed directly on the cavity.
• The capping materials will be placed with the passive application on the deepest part of the cavity.
• A light-cured glass ionomer cement base will be applied in the cavity .
• Selective enamel etching will be applied on enamel only.
• The one-bottle universal adhesive system bond will be applied on enamel and dentine.
• A Nano hybrid composite resin material will then be incrementally inserted into the cavities.

• Complete caries removal from the cavity.
• The liquid of Egyptian MTA (Toothmate) will be mixed with powder according to the manufacturers' instructions.
• The capping materials will be placed with the passive application on the deepest part of the cavity. Only light pressure will be applied on the MTA mixture using a wet cotton pellet to ensure adaptation of the material onto the dentin.
• A light-cured glass ionomer cement base will be applied in the cavity .
• Selective enamel etching will be applied on enamel only.
• The one-bottle universal adhesive system bond will be applied on enamel and dentine.
• A Nano hybrid composite resin material will then be incrementally inserted into the cavities.

Pulp response to different stimuli by thermal and electrical pulp tests. When tooth normally responds to thermal and electrical pulp tests = success When tooth doesn't respond to thermal and electrical pulp tests = failure

Patient reported outcome measures by visual analogue scale visual analogue scale is used to describe the pain by patients themselves in scores as ( 0: no pain ) & (7-10 : Severe pain)