This study explores an alternative approach using a pre-heated restorative resin composite as a luting material of partial coverage restorations on upper and lower posterior teeth. It will follow a split-mouth design with 60 participants selected based on strict criteria. Assessment at 6 months and 1 year post-delivery utilizes a modified model of USPHS criteria, evaluating retention, color match, marginal discoloration, secondary caries, anatomical form, marginal adaptation, and surface roughness. The null hypothesis: The use of preheated resin composite for cementing partial coverage restoration will not result in significantly superior clinical performance when compared to that after using dual-cure resin cement.
The adhesive cementation of ceramic partial coverage restorations is a technique-sensitive process essential for achieving optimal retention and marginal integrity. While dental resin cements are commonly used for adhesive luting of indirect ceramic restorations, concerns exist regarding their long-term reliability due to susceptibility to degradation over time and polymerization shrinkage-related issues. This study explores an alternative approach using a pre-heated restorative resin composite as a luting material of partial coverage restorations on upper and lower posterior teeth, aiming to address these drawbacks. It will follow a split-mouth design with 60 participants selected based on strict criteria. The preparation and delivery appointments follow specific guidelines, incorporating the Morphology Driven Preparation Technique (MDPT). Assessment at 6 months and 1 year post-delivery utilizes a modified model of USPHS criteria, evaluating retention, color match, marginal discoloration, secondary caries, anatomical form, marginal adaptation, and surface roughness. The objectives of this clinical trial are to evaluate the clinical performance of posterior partial coverage coronal restorations utilizing two different luting systems (preheated resin-based composite versus conventional dual-cure resin cement) in a split-mouth study design.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
70
Resin composite will be heated and used to lute a ceramic partial coverage restoration.
Dual cure adhesive resin cement will be used to lute a ceramic partial coverage restoration.
Jordan University of Science and Technology
Irbid, Jordan
RECRUITINGClinical evaluation of the performance of restoration adaptation of posterior partial coverage ceramic restoration.
Clinical examination and evaluation of the adaptation quality of partial coverage restorations according to the United States Public Health Service (USPHS) criteria as Alpha, Beta, Charlie, Delta and Echo. Alpha score means: restoration contour is continuous with the existing anatomical margin of the tooth. Beta score means: restoration is slightly under or over contoured. Charlie score means: marginal overhang or tooth structure (dentin or enamel) is exposed. Delta score means: restoration is missing, or traumatic occlusion, or restoration causes pain.
Time frame: 1 year
Clinical evaluation of the presence or absence of caries adjacent to posterior partial coverage ceramic restoration.
Clinical examination and evaluation of the caries presence of partial coverage restorations according to the United States Public Health Service (USPHS) criteria as Alpha, Beta. Alpha score means: No visible caries Beta score means: caries present
Time frame: 1 year
Clinical evaluation of the performance of marginal adaptation of posterior partial coverage ceramic restoration.
Clinical examination and evaluation of the marginal adaptation quality of partial coverage restorations according to the United States Public Health Service (USPHS) criteria as Alpha, Beta, Charlie, Delta. Alpha score means: Excellent continuity at resin-enamel interface, no ledge formation, no discoloration Beta score means: Slight discoloration at resin-enamel interface; ledge at interafce. Charlie score means: Moderate discoloration at resin-enamel interface measuring 1mm or greater. Delta score means: Recurrent caries at margins.
Time frame: 1 year
Clinical evaluation of surface staining of posterior partial coverage ceramic restoration.
Clinical examination and evaluation of the presence or absence of surface staining of partial coverage restorations according to the United States Public Health Service (USPHS) criteria as Alpha, Beta. Alpha score means: staining absent Beta score means: staining present
Time frame: 1 year
Clinical evaluation of contact points of posterior partial coverage ceramic restoration.
Clinical examination and evaluation of the contact points quality of partial coverage restorations according to the United States Public Health Service (USPHS) criteria as Alpha, Beta. Alpha score means: contact point present Beta score means: contact point absent.
Time frame: 1 year
Clinical evaluation of fracture of posterior partial coverage ceramic restoration.
Clinical examination and evaluation of the structural integrity endurance of partial coverage restorations according to the United States Public Health Service (USPHS) criteria as Alpha, Beta, Charlie, Delta, Echo. Alpha score means: No fracture of the restoration. Beta score means: Small chipping (1/4 of restoration) Charlie score means: Moderate chipping (1/2 of restoration) Delta score means: Severe chipping (3/4 of restoration) Echo score means: loss of the restoration.
Time frame: 1 year
Clinical evaluation of wear of posterior partial coverage ceramic restoration.
Clinical examination and evaluation of the wear presence or absence of partial coverage restorations according to the United States Public Health Service (USPHS) criteria as Alpha, Beta. Alpha score means: absence of wear. Beta score means: wear present.
Time frame: 1 year
Radiographic evaluation of the performance of restoration adaptation of posterior partial coverage ceramic restoration.
Radiographic examination and evaluation of the adaptation quality of partial coverage restorations according to the United States Public Health Service (USPHS) criteria as Alpha, Beta, Charlie, Delta and Echo. Alpha score means: restoration contour is continuous with the existing anatomical margin of the tooth. Beta score means: restoration is slightly under or over contoured. Charlie score means: marginal overhang or tooth structure (dentin or enamel) is exposed. Delta score means: restoration is missing.
Time frame: 1 year
Radiographic evaluation of the presence or absence of caries adjacent to posterior partial coverage ceramic restoration.
Radiographic examination and evaluation of the caries presence of partial coverage restorations according to the United States Public Health Service (USPHS) criteria as Alpha, Beta. Alpha score means: No visible caries Beta score means: caries present
Time frame: 1 year
Radiographic evaluation of marginal adaptation of posterior partial coverage ceramic restoration.
Radiographic examination and evaluation of the marginal adaptation quality of partial coverage restorations according to the United States Public Health Service (USPHS) criteria as Alpha, Beta, Charlie, Delta. Alpha score means: Excellent continuity at resin-enamel interface, no ledge formation, no discoloration Beta score means: Slight discoloration at resin-enamel interface; ledge at interafce. Charlie score means: Moderate discoloration at resin-enamel interface measuring 1mm or greater. Delta score means: Recurrent caries at margins.
Time frame: 1 year
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