The aim of the study is to assess the marginal adaptation, color stability and clinical performance of glass ceramic sectional veneers compared to full laminate veneers There's two null hypotheses , the first is that there is no difference in the marginal adaptation of sectional and full glass ceramic laminate veneers.

the Second is that there is no apparent change in color stability and clinical performance of sectional and full glass ceramic laminate veneers.

Although seeking for more minimally invasive treatment modalities with the use of the new advancements in ceramics and adhesive materials, however there is insufficient clinical studies assessing the ultraconservative sectional veneers has been published although there are many published case reports proving their success .

Hence the aim of this study is to assess the sectional veneers compared to laminate veneer regarding marginal adaptation, color stability and clinical performance

Inclusion Criteria:

• Patients seeking for esthetics with the following criteria
• Male or female patients age range above 18 years old
• Minor esthetic defects in anterior region
• Multiple spacing
• diastemas
• Incisal fracture
• Initial proximal caries
• Patients able physically and psychologically to tolerate restorative procedures
• Patients willing to return for follow-up examinations and evaluation
• Class I occlusion

Exclusion Criteria:

• Patients free of:
• Tempromandibular disorders
• Para-functional habits
• Cracked teeth
• Moderate or deep caries
• Heavily discolored teeth
• Heavy smokers
• Enamel defects compromising bonding
• Active periodontal disease
• Pulpal disease
• Mobility
• Occlusal disturbances
• Class II and III occlusion

double blinded Data analyst, statistician and patient will be blinded