Clinical Performance and Remineralization Potential of Self- Assembling Peptide P11-4 Containing Fluoride Versus Er, Cr: YSGG Laser Treatment and Micro Tensile Bond Strength of Giomer Restoration in Carious Lesions

Clinical Performance and Remineralization Potential of Self- Assembling Peptide P11-4 Containing Fluoride Versus Er, Cr: YSGG Laser Treatment and Micro Tensile Bond Strength of Giomer Restoration in Carious Lesions

This study will be performed in two parts, in vivo and in vitro to assess the effect of the remineralization potential of self-assembling peptide P11-4 containing Fluoride on caries-affected dentin compared to untreated caries-affected dentin and the influence of Er, Cr: YSGG Laser treatment.

The present study will be performed to evaluate the remineralization potential of the self-assembling peptide P11-4 combined with fluoride treatment applied over demineralized dentin in occlusal carious molars.

• Research objectives: To assess the effect of the two treatment modalities to enhance remineralization of demineralized dentin and clinical performance of restorations.

• Research question: Will pretreatment of caries affected dentin using self-assembling peptide P11-4 containing fluoride compared to untreated caries-affected dentin will enhance the remineralization and clinical performance of composite restorations In Vitro Study

  1- The present study will be performed to evaluate the remineralization potential of the self-assembling peptide P11-4 combined with fluoride and its effect on bond strength and analyze morphological changes over demineralized dentin in occlusal carious molars using Scanning Electron Microscopy (SEM).

• Research Objectives: To evaluate the effect of Curodont Repair Fluoride Plus and Er,Cr:YSGG laser pretreatment on the bond strength of composite resin to superficial and deep dentin.

• Research question: Will pretreatment of caries affected dentin using self-assembling peptide P11-4 containing fluoride compared to untreated caries-affected dentin will enhance bond strength?

Inclusion Criteria:

• o Patients aged (20 - 40) years.

  • Presence of at least one posterior permanent molar with an occlusal carious lesion classified as ICDAS code 3 or 4 requiring operative treatment.
  • Good general and oral health.
  • Willingness to participate and provide informed consent.

Exclusion Criteria:

• o Patients with systemic conditions affecting oral health or healing.

  • Teeth with pulp involvement or periapical pathology.
  • Allergy to study materials.
  • Poor oral hygiene or periodontal disease in the target tooth region.