Digital impressions for fabrication of definitive "all-on-four" restorations.

Abstract:

PURPOSE:The aim of this study was to assess the accuracy of digital impressions for "all-on-four" implant rehabilitation. MATERIALS AND METHODS:Patients edentulous in one or both jaws were randomly selected for this study. Complete arch immediately loaded prostheses supported by 4 implants (2 axial and 2 tilted) were placed. Five hours after implant placement, screw-retained full-arch temporary prostheses were positioned. After 4 months, a digital scan body was used to finalize definitive prosthesis. Radiographic assessments were obtained immediately after surgery and at each follow-up visit. Bone level measurements were reported at 6 and 12 months, and bone loss between upright and tilted implants was compared. RESULTS:Fourteen definitive cast metal frameworks prosthesis were delivered to the patients. No implant dropout occurred. All prosthesis were screwed onto the dental implants, and x-ray examinations revealed a bar-implant connection accuracy. The implant survival rate was 100% for all positioned implants. No statistically significant differences (P > 0.05) in crestal bone loss between tilted and upright implants were detected. CONCLUSIONS:Digital impression creates an accurate physical model significantly improving efficiencies for the dental team and streamlining the workflow.

journal_name

Implant Dent

journal_title

Implant dentistry

authors

Gherlone EF,Ferrini F,Crespi R,Gastaldi G,Capparé P

doi

10.1097/ID.0000000000000206

subject

Has Abstract

pub_date

2015-02-01 00:00:00

pages

125-9

issue

1

eissn

1056-6163

issn

1538-2982

pii

00008505-201502000-00022

journal_volume

24

pub_type

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