Immediate and Flapless Full-arch Rehabilitation of Edentulous Jaws

University of Roma La Sapienza28 enrolled

Overview

The study involved 28 edentulous patients (20 female/8 males; average age of 67.75± 8.627 years) rehabilitated with 33 prostheses (17 all-on-4/16 all-on-6) supported by 164 implants.

Clinical and radiographic outcomes were implants survival, prostheses success/survival, implant marginal bone loss, incidence of biological and prosthetic complications.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Edentulous Patients

Interventions

rehabilitation with fixed full-arch prosthesisPROCEDURE

Eligibility

Sex: ALL

Medical Language ↔ Plain English

Inclusion Criteria * Mandibles or maxillae edentulous or with hopeless teeth; * Patient's request of fixed implant restorations * Patients in general good health (ASA-1/ASA-2) Exclusion Criteria * Compromised systemic conditions; * Head/neck irradiation or chemotherapy within 2 years; * Bisphosphonate therapy; * Metabolic bone diseases; * Insufficient bone volume; * Mouth opening less than 50 mm inadequate to place surgical instrumentations. * History of periodontitis or smoking habit were not considered exclusion criteria.

Outcomes

Primary Outcomes

Implant marginal bone loss (MBL)

difference in marginal bone level from the functional loading time with the provisional prosthesis (baseline) to the end of the follow-up measured in millimeters/years on periapical radiographs. Periapical radiographs of each implant were taken every year using the parallel long-cone technique and a standardized film holder (Rinn Centratore XCP Evolution 2003, Dentsply, Rome, Italy).

Time frame: from the functional loading time with the provisional prosthesis (baseline) T0 to the end of the follow-up, assessed up to 10 years and measured in millimeters on periapical radiographs taken every year using the parallel long-cone technique.

Prosthetic complications

included detachment/incisal and occlusal wear/fracture/chipping/replacing of denture teeth, fracture of implant, prosthesis or framework, loosening/fracture of abutment or occlusal screw, loosening/fracture of the prosthetic screw

Time frame: Every 6 months from the functional loading time with the provisional prosthesis (baseline) to the end of the follow-up, assessed up to 10 years.

Biologic complications

inflammation / infection under fixed prosthesis, soft tissue hypertrophy / hyperplasia, soft tissue recession / dehiscence, peri-implant mucositis, peri-implantitis. Modified plaque index (mPI), modified gingival index (mGI), bleeding on probing (BoP), and probing depth (PD). mPI, mGI, BoP, and PD measurements were performed at 6 aspects per implant. mPI was scored as: 0 = no detection of plaque; 1 = plaque only recognized by running a probe across the smooth marginal surface of the implant; 2 = plaque can be seen by the naked eye; 3 = abundance of soft matter. mGI was scored as: 0 = no bleeding when a periodontal probe is passed along the mucosal margin adjacent to the implant; 1 = isolated bleeding spots visible; 2 = blood forms a confluent red line on mucosal margin; 3 = heavy or profuse bleeding. BoP was scored as 0 = absence; 1 = presence; PD was measured in mm.

Time frame: Every 6 months from the functional loading time with the provisional prosthesis (baseline) to the end of the follow-up, assessed up to 10 years.

Data from ClinicalTrials.gov

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