Together with materials and type of retention, the stability of the implant abutment connection represents one of the key factor for the success rate of an implant supported restoration. The recent diffusion of high quality and easy to use CAD/CAM systems has contributed to market launch of a number of competing companies that offer the so called "clonical" or "compatible" restorative components. Although they are claimed to be identical, the original abutments are supposed to present maximum accuracy and consequently lower microleakage. The aim of the present randomized controlled trial will be to analyze the implant abutment junction stability comparing implant-supported crowns restored with original components and compatible non-original abutments. The hypothesis is that original components will present significantly better stability than non-original abutments.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
40
Original (Sweden\&Martina) CAD/CAM abutments will be screwed to the implants at 32N/cm.
Compatible (New Ancorvis) CAD/CAM abutments will be screwed to the implants at 32N/cm.
Infiltration of 4% articaine with 1:100,000 adrenalin (Inibsa).
Patients will be prescribed ibuprofen 600 mg three times per day for five days
Patients will be prescribed mouth-rinse with chlorhexidine 0.12% twice daily starting 3 days prior to surgery and for 2 weeks afterward
Dental implants (Sweden \& Martina, Padua, Italy) will be placed at crestal level and according to the manufacturer's instructions.
Clínica Odontológica de la Universitat de Valencia, Fundación Lluis Alcanyis
Valencia, Spain
RECRUITINGBiological complications
Proportion of cases with peri-implant disease.
Time frame: 1 year
Biomechanical complications
Proportion of cases with fracture or loosening of screws
Time frame: 1 year
Microbial loads
Quantitative analysis of microbial species will be studied using Illumina protocol for 6S ribosomal RNA
Time frame: 1 year
Probing Pocket Depth
Measured from the mucosal margin to the bottom of the probable pocket.
Time frame: 1 year
Modified Plaque Index
Presence/absence of plaque at the cervical part of the implant-supported crown scored by running a probe along the implant-supported crown surface.
Time frame: 1 year
Bleeding on Probing
Presence/absence of bleeding after probing.
Time frame: 1 year
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