Nonguided implant placement approach okay for placement of One-piece mini-implants to support mandibular overdenture: Study
Nonguided implant placement approach okay for placement of One-piece mini-implants to support mandibular overdenture suggests a study published in the Clinical Oral Implants Research.
A study was done to assess the relative position of mini-implants to retain a mandibular overdenture, according to the surgical protocol, technical and anatomical factors.Mandibular cone-beam computed tomography (CBCT) scans were analyzed for 73 patients who received four one-piece titanium-zirconium mini-implants. Drilling was performed using a 1.6 mm needle drill and a 2.2 mm Pilot Drill, according to the bone density with a surgical stent.
Post-insertion CBCT images in DICOM format were analyzed using the E-Vol-DX software with BAR filters. Divergence angle between implants and between implants and the overdenture path of insertion was measured using CliniView 10.2.6 software. Results: Divergence between implants ranged from 0° to 22.3° (mean = 4.2; SD = 3.7) in the lateral and from 0° to 26.2° (mean = 5.3; SD = 4.1) in the frontal projections (p < .001). Only 1 (0.2%) and 3 (0.7%) of the measurements were higher than 20° in the lateral and frontal views, respectively.
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