Dataset Information

Marginal Bone Level and Bone Thickness Reduction in Delayed and Immediate Implant Placement Protocol 6 Months Post-loading: An Observational Clinical Prospective Study.

ABSTRACT:

Objectives

The aim of this prospective study was to assess marginal bone level (MBL), buccal and palatal bone thickness reduction (BTR) around implants in delayed and immediate placement protocols, 6 months after loading.

Materials and methods

Twenty-four patients were assigned to two treatment groups, and treated with an immediate (Test) or delayed implant placement (Control). Baseline and 6 months post-loading periapical and Cone Beam Computed Tomography radiographs were used to measure mesial, distal, buccal, and palatal MBL change, and buccal and palatal BTR.

Results

There was no statistically significant difference between groups, in MBL change, mesially (p = 0.4220), distally (p = 0.774), buccally (p = 0.221), and palatally (p = 0.195). There was more MBL change on the buccal side than on the palatal side in both groups, control (p = 0.012) and test (p = 0.005). Buccal bone thickness decreased significantly in both groups, and at all four levels (p < 0.05). Buccal BTR was higher in test implants at 0, 2, and 4 mm (p = 0.005, p = 0.0018, p = 0.006) on the buccal side, and at 0 mm (p = 0.006) on the palatal side. Implant stability increased in both groups (p < 0.001). A positive correlation was found between insertion torque and stability in the control group (p = 0.024).

Conclusions

Within the study limitations, MBL changes occur around implants and are comparable between groups. More buccal than palatal MBL change occurs in both groups. Buccal BTR is higher in immediate cases. Implant stability augmented in both groups.

Clinical relevance

This data call for additive therapy to compensate for the expected bone loss, particularly in esthetically demanding cases.

Trial registration

ClinicalTrials.gov Identifier: NCT04346706 Registered 14 April 2020 - Retrospectively registered, http://www.clinicalTrials.gov.

SUBMITTER: Dagher M

PROVIDER: S-EPMC9192900 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Marginal Bone Level and Bone Thickness Reduction in Delayed and Immediate Implant Placement Protocol 6 Months Post-loading: An Observational Clinical Prospective Study.

Dagher Maroun M Mokbel Nadim N Aboukhalil Rami R Ghosn Nabil N Kassir Abdelrahman A Naaman Nada N

Journal of maxillofacial and oral surgery 20220107 2

<h4>Objectives</h4>The aim of this prospective study was to assess marginal bone level (MBL), buccal and palatal bone thickness reduction (BTR) around implants in delayed and immediate placement protocols, 6 months after loading.<h4>Materials and methods</h4>Twenty-four patients were assigned to two treatment groups, and treated with an immediate (Test) or delayed implant placement (Control). Baseline and 6 months post-loading periapical and Cone Beam Computed Tomography radiographs were used to ...[more]

PMID: 35712433

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Project description:BackgroundImmediate loading has recently been introduced into unsplinted mandibular implant-retained overdentures for the management of edentulous patients due to their increasing demand on immediate aesthetics and function. However, there is still a scarcity of meta-analytical evidence on the efficacy of immediate loading compared to delayed loading in unsplinted mandibular implant-retained overdentures. The purpose of this study was to compare the marginal bone loss (MBL) around implants between immediate and delayed loading of unsplinted mandibular implant-retained overdentures.MethodsRandomized controlled trials (RCTs), controlled clinical trials (CCTs), and cohort studies quantitatively comparing the MBL around implants between immediate loading protocol (ILP) and delayed loading protocol (DLP) of unsplinted mandibular overdentures were included. A systematic search was carried out in PubMed, EMBASE, and CENTRAL databases on December 02, 2020. "Grey" literature was also searched. A meta-analysis was conducted to compare the pooled MBL of two different loading protocols of unsplinted mandibular overdentures through weighted mean differences (WMDs) with 95% confidence intervals (95% CIs). The subgroup analysis was performed between different attachment types (i.e. Locator attachment vs. ball anchor). The risk of bias within and across studies were assessed using the Cochrane Collaboration's tool, the Newcastle-Ottawa scale, and Egger's test.ResultsOf 328 records, five RCTs and two cohort studies were included and evaluated, which totally contained 191 participants with 400 implants. The MBL of ILP group showed no significant difference with that of DLP group (WMD 0.04, CI - 0.13 to 0.21, P > .05). The subgroup analysis revealed similar results with Locator attachments or ball anchors (P > .05). Apart from one RCT (20%) with a high risk of bias, four RCTs (80%) showed a moderate risk of bias. Two prospective cohort studies were proved with acceptable quality. Seven included studies have reported 5.03% implant failure rate (10 of 199 implants) in ILP group and 1.00% failure rate (2 of 201 implants) in DLP group in total.ConclusionsFor unsplinted mandibular implant-retained overdentures, the MBL around implants after ILP seems comparable to that of implants after DLP. Immediate loading may be a promising alternative to delayed loading for the management of unsplinted mandibular implant-retained overdentures. PROSPERO registration number: CRD42020159124.

Project description:ObjectiveTo assess the efficacy of using a bone substitute material (BSM) in the fixture-socket gap in patients undergoing tooth extraction and immediate implant placement.Materials and methodsMEDLINE, EMBASE, and CENTRAL databases were searched for randomized controlled trials (RCTs). RCTs were screened for eligibility, and data were extracted by two authors independently. Risk of bias (ROB) was assessed using Cochrane's ROB tool 2.0. Primary outcomes were implant failure, overall complications, and soft-tissue esthetics. Secondary outcomes were vertical buccal bone resorption, vertical interproximal bone resorption, horizontal buccal bone resorption, and mid-buccal mucosal recession. Meta-analysis was performed using random-effects model with generic inverse variance weighing. GRADE was used to grade the certainty of the evidence.ResultsAfter screening 19 544 potentially eligible references, 20 RCTs were included in this review, with a total of 848 patients (916 sites). Most included RCTs were deemed of some concerns (53%) or at low (38%) risk of bias, except for overall complications (high ROB). Implant failure did not differ significantly RR = 0.92 (confidence intervals [CI] 0.34 to 2.46) between using a BSM compared with not using a BSM (NoBSM). BSM use resulted in less horizontal buccal bone resorption (MD = -0.52 mm [95% CI -0.74 to -0.30]), a higher esthetic score (MD = 1.49 [95% CI 0.46 to 2.53]), but also more complications (RR = 3.50 [95% CI 1.11 to 11.1] compared with NoBSM. Too few trials compared types of BSMs against each other to allow for pooled analyses. The certainty of the evidence was considered moderate for all outcomes except implant failure (low), overall complications (very low), and vertical interproximal bone resorption (very low).ConclusionBSM use during immediate implant placement reduces horizontal buccal bone resorption and improves the periimplant soft-tissue esthetics. Although BSM use increases the risk of predominantly minor complications.

Dataset Information

Marginal Bone Level and Bone Thickness Reduction in Delayed and Immediate Implant Placement Protocol 6 Months Post-loading: An Observational Clinical Prospective Study.

Objectives

Materials and methods

Results

Conclusions

Clinical relevance

Trial registration

Publications

Marginal Bone Level and Bone Thickness Reduction in Delayed and Immediate Implant Placement Protocol 6 Months Post-loading: An Observational Clinical Prospective Study.

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