Table 1.

Patients' recruited criteria.

The inclusion criteria	Criteria related to teeth condition
	(i) The proximal caries on anterior and posterior teeth
	(ii) The existence of the same type of antagonistic teeth (“mirror”-positioned healthy teeth) used controls
	(iii) An absence of fresh postextractional or traumatic wounds in the restoration area or the area of restored surfaces
	(iv) An absence of infection in the area of restored surfaces
	Other influencing criteria
	(i) Patients with no bone-associated diseases or treatments
	(ii) Satisfactory oral hygiene
	(iii) Reliable and cooperative patients
The exclusion criteria	Criteria related to teeth condition
	(i) Endodontic and/or periodontal infections in the area of cervical filling
	(ii) Parodontopathy
	(iii) Prominent periodontal pockets
	(iv) Subgingival caries
	(v) Fillings that were prominent outside the cavity
	Other influencing criteria
	(i) Patients on radiation immunosuppressive therapy
	(ii) Patients bone-associated diseases and malignant diseases
	(iii) Addictive patients on drug/alcohol/cigarettes (>20 cigarettes per day)
	(iv) Bad oral hygiene
	(v) Unreliable and uncooperative patients

Inclusion criteria: criteria related to teeth condition. The proximal caries on the anterior and posterior teeth. The existence of the same type of antagonistic teeth (“mirror”-positioned healthy teeth) used controls. An absence of fresh postextractional or traumatic wounds in the restoration area or the area of restored surfaces. An absence of infection in the area of restored surfaces. Other influencing criteria. Patients with no bone-associated diseases or treatments. Satisfactory oral hygiene. Reliable and cooperative patients. Exclusion criteria: criteria related to teeth condition. Endodontic and/or periodontal infections in the area of cervical filling. Parodontopathy. Prominent periodontal pockets. Subgingival caries. Fillings that were prominent outside the cavity. Other influencing criteria. Patients on radiation immunosuppressive therapy. Patients' bone-associated diseases and malignant diseases. Addictive patients on drug/alcohol/cigarettes (>20 cigarettes per day). Bad oral hygiene. Unreliable and uncooperative patients.