This clinical study compares two CAD/CAM framework materials, titanium and nano-carbon fiber-reinforced composite, used in mandibular All-on-4 implant-supported hybrid prostheses. Ten completely edentulous patients are randomly allocated into two equal groups. The study evaluates peri-implant soft tissue health, changes in marginal bone levels,and prosthetic complications over an 12-month follow-up period.
Completely edentulous patients receive four mandibular implants according to the All-on-4 concept, with two anterior axial implants and two posterior tilted implants placed anterior to the mental foramina. Patients are randomly allocated to receive either a CAD/CAM-milled titanium framework or a nano-carbon fiber-reinforced framework. Clinical follow-up includes assessment of modified plaque index, modified gingival index, probing depth, and bleeding index. Marginal bone level changes are assessed radiographically at 6 and 12 months after insertion of the fixed prosthesis. Prosthetic complications are also evaluated.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
10
CAD/CAM-milled titanium framework used for mandibular All-on-4 implant-supported hybrid prosthesis.
Nano-carbon fiber-reinforced CAD/CAM framework used for mandibular All-on-4 implant-supported hybrid prosthesis.
Faculty of Dentistry, Mansoura University
Al Mansurah, Dakahlia Governorate, Egypt
Marginal bone level change
Radiographic assessment of changes in peri-implant marginal bone level around the implants in the titanium and nano-carbon framework groups.
Time frame: At prosthesis insertion (T0), 6 months (T6), and 12 months (T12)
Modified plaque index
Assessment of plaque accumulation around the implants using the modified plaque index
Time frame: At prosthesis insertion (T0), 6 months (T6), and 12 months (T12)
Modified gingival index
Assessment of peri-implant gingival tissue condition using the modified gingival index
Time frame: At prosthesis insertion (T0), 6 months (T6), and 12 months (T12)
Probing depth
Measure of per-implant probing depth around the implants
Time frame: At prosthesis insertion (T0), 6 months (T6), and 12 months (T12)
Bleeding index
Assessment of peri-implant bleeding using the bleeding index
Time frame: At prosthesis insertion (T0), 6 months (T6), and 12 months (T12)
prosthetic complications
Assessment of prosthetic complications and maintenance requirements associated with the implant supported prosthesis
Time frame: up to12 months after prosthesis insertion
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