Effect of Simultaneous Immediate Implant Placement and Guided Bone Reconstruction with Ultra-Fine Titanium Mesh Membranes on Radiographic and Clinical Parameters after 18 Months of Loading

Background: The aim of the present prospective case series study was to evaluate the implant and prosthetic survival rates, complications and marginal bone loss using ultra-fine titanium mesh membrane with simultaneous implant placement, to provide space maintenance mandatory for guided bone reconstruction of alveolar bone defects. Materials and Methods: patients were recruited and treated at a private clinic in Rome, Italy, between March 2016 and October 2017. Self-tapping tapered implants were placed through a computer-guided template-assisted approach. Autogenous bone was placed alone over the exposed implant surface, then mixed with inorganic bovine bone material. Finally, the membrane was connected and shaped in order to securely enclose the graft area, and the healing cap was connected and screwed onto the height connector. Outcome measures were: implant and prosthetic failure, biological and mechanical complications, marginal and volumetric bone level changes, esthetic evaluation performed according to the pink aesthetic score (PES). Results: in total, seven patients (five women, two men) with a mean age of 52.7 ± 20.3 years (range: 27–71) received 10 self-tapping tapered implants and simultaneous guided bone regeneration with ultra-fine titanium mesh membranes. No implants and no prostheses failed during the entire follow-up period. One slightly membrane exposure was observed one month after implant placement in one patient. The mean marginal bone loss (MBL) at implant loading was 0.13 ± 0.09 mm (95% CI 0.08–0.19). At the 18-month follow-up examination, the mean MBL was 0.28 ± 0.33 mm (95% CI 0.07–0.50) The difference was not statistically significant (0.15 ± 0.31; 95% CI 0.05–0.35; P = 0.1888). The mean horizontal alveolar ridge width was 3.72 ± 1.08 mm (95% CI 3.22–4.22 mm). At the II-stage surgery, the mean bone width was 8.79 ± 0.98 mm (95% CI 8.51–9.07 mm). The mean bone gain was 5.06 ± 1.13 mm (95% CI 4.68–5.44 mm; P = 0.000). The mean volume of the grafted bone calculated using the superimposition technique was 0.99 ± 0.38 CC (95% CI 0.75–1.23 CC). The mean PES at implant loading was 8.2 ± 0.8 mm (95% CI 7.7–8.7). At the 18-month follow-up examination, the mean PES was 12.0 ± 0.7 mm (95% CI 11.5–12.5) The difference was statistically significant (3.8 ± 0.4; 95% CI 3.5–4.1; P = 0.0000); Conclusion: with the limitation of the present prospective study, the guided bone reconstruction using an ultra-fine titanium mesh membrane with simultaneous implant placement seems to provide good and stable results in implant/prosthesis success. Further research with a longer follow-up and a higher sample size are needed to confirm the results from this preliminary report.

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Assessment of Marginal Bone Loss around Platform-Matched and Platform-Switched Implants - A Prospective Study

Brazilian Dental Journal ◽

10.1590/0103-6440201601160 ◽

2016 ◽

Vol 27 (6) ◽

pp. 712-716 ◽

Cited By ~ 1

Author(s):

Newton Sesma ◽

Carlos Garaicoa-Pazmino ◽

Piero R. Zanardi ◽

Eliseo P. Chun ◽

Dalva Cruz Laganá

Keyword(s):

Bone Loss ◽

Positive Impact ◽

Test Group ◽

Control Group ◽

Bone Modeling ◽

Radiographic Assessment ◽

Marginal Bone Loss ◽

Implant Placement ◽

Platform Switching ◽

Implant Loading

Abstract The aim of the present study was to perform a software-assisted radiographic assessment of the effect of platform-switching on marginal bone loss (MBL) around dental implants. Forty patients requiring a dental implant in non-grafted partially edentulous mandibles were enrolled and categorized into implants receiving a platform-matched abutment (control group) or implants with a platform-switched abutment (test group). Standardized digital periapical radiographs were taken at the time of implant placement (T0), at implant loading (T1) and 1-year after functional loading (T2). Software-assisted radiographic assessment of the MBL horizontal, vertical and area changes was performed and compared between time intervals (T1-T0, T2-T1 and T2-T0). Mean radiographic horizontal MBL (hMBL) and vertical MBL (vMBL) from implant placement to 1-year after implant loading (T2-T0) were significantly increased around platform-matched when compared to platform-switched abutments (1.04 mm vs 0.84 mm, p<0.05) and (0.99 mm vs 0.82 mm, p<0.05), respectively. Additionally, bone loss area (BLa) was greater (0.77 mm2 vs 0.63 mm2; p<0.05) for platform-matched compared to platform-switched abutments. Platform-switching has a positive impact upon the amount of bone modeling after loading implants with internal hexagon connection.

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The Association of the One-Abutment at One-Time Concept with Marginal Bone Loss around the SLA and Platform Switch and Conical Abutment Implants

Journal of Clinical Medicine ◽

10.3390/jcm11010074 ◽

2021 ◽

Vol 11 (1) ◽

pp. 74

Author(s):

Nasreen Hamudi ◽

Eitan Barnea ◽

Evgeny Weinberg ◽

Amir Laviv ◽

Eitan Mijiritsky ◽

...

Keyword(s):

Bone Loss ◽

Test Group ◽

Mucosal Barrier ◽

Control Group ◽

X Rays ◽

Marginal Bone Loss ◽

Bone Level ◽

The Difference ◽

The One

Objectives: Repeated abutment disconnection/reconnection may compromise the mucosal barrier and result in crestal bone level changes. The clinical significance of this phenomenon is not yet clear, as most studies on this topic are short-term. Therefore, the aim of the present study was to evaluate the influence of abutment disconnections and reconnections on peri-implant marginal bone loss over a medium-term follow-up period. Material and methods: Twenty-one patients (6 men and 15 women) with a mean age 66.23 ± 9.35 year at the time of implant placement were included. All patients who received two adjacent nonsubmerged implants were randomly assigned into one of the two groups: definitive multiunit abutments (DEFs) connected to the implant that were not removed (test group) or healing abutments (HEAs) placed at surgery, which were disconnected and reconnected 3–5 times during the prosthetic phase (control group). Peri-implant marginal bone levels (MBL) were measured through periapical X-rays images acquired immediately after the surgery (baseline), at 4–7 months immediately after prosthetic delivery, and at 1-year and 3-year follow-up visits. Results: No implant was lost or presented bone loss of more than 1.9 mm during the 3-year follow-up; thus, the survival and success rate was 100%. Peri-implant mucositis was noticed in 38.1% DEFs and 41.9% of HEAs at the 3-year follow-up assessment. At the end of 3 years, the MBL was −0.35 ± 0.69 mm for participants in the DEFs group and −0.57 ± 0.80 mm for the HEAs group, with significant statistical difference between groups. Conclusions: Immediate connection of the multiunit abutments reduced bone loss in comparison with 3–5 disconnections noted in the healing abutments 3 years after prosthetic delivery. However, the difference between the groups was minimal; thus, the clinical relevance of those results is doubtful.

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A One-year Follow-up Study of a Tapered Hydrophilic Implant Design Using Various Placement Protocols in the Maxilla

The Open Dentistry Journal ◽

10.2174/1874210601610010680 ◽

2016 ◽

Vol 10 (1) ◽

pp. 680-691 ◽

Cited By ~ 4

Author(s):

Jakob Zwaan ◽

Leonardo Vanden Bogaerde ◽

Herman Sahlin ◽

Lars Sennerby

Keyword(s):

Survival Rate ◽

Bone Loss ◽

Implant Design ◽

Insertion Torque ◽

Daily Routine ◽

High Survival ◽

Marginal Bone Loss ◽

The Mean ◽

One Year

Purpose: To study the clinical/radiographic outcomes and stability of a tapered implant design with a hydrophilic surface when placed in the maxilla using various protocols and followed for one year. Methods: Ninety-seven consecutive patients treated as part of daily routine in two clinics with 163 tapered implants in healed sites, in extraction sockets and together with bone augmentation procedures in the maxilla were evaluated after one year in function. Individual healing periods varying from 0 to 6 months had been used. Insertion torque (IT) and resonance frequency analysis (RFA) measurements were made at baseline. Follow-up RFA registrations were made after 6 and 12 months of loading. The marginal bone levels were measured in intraoral radiographs from baseline and after 12 months. A reference group consisting of 163 consecutive straight maxillary implants was used for the comparison of baseline IT and RFA measurements. Results: Five implants failed before loading, giving an implant survival rate of 96.9% and a prosthesis survival rate of 99.4% after one year. The mean marginal bone loss after one year was 0.5 mm (SD 0.4). The mean IT was statistically significantly higher for tapered than for straight reference implants (41.3 ± 12.0 Ncm vs 33.6 ± 12.5 Ncm, p < 0.001). The tapered implants showed a statistically insignificantly higher mean ISQ value than the straight references implants (73.7 ± 6.4 ISQ vs 72.2 ± 8.0 ISQ, p=0.119). There was no correlation between IT and marginal bone loss. There was a correlation between IT and RFA measurements (p < 0.001). Conclusion: The tapered implant showed a high survival rate and minimal marginal bone loss after one year in function when using various protocols for placement. The tapered implant showed significantly higher insertion torque values than straight reference implants.

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Treatment of Full and Partial Arches with Internal-Conical-Connection Dental Implants: Clinical Results after 5 Years of Follow-Up

Applied Sciences ◽

10.3390/app10238709 ◽

2020 ◽

Vol 10 (23) ◽

pp. 8709

Author(s):

Diego Lops ◽

Riccardo Guazzo ◽

Alessandro Rossi ◽

Antonino Palazzolo ◽

Vittorio Favero ◽

...

Keyword(s):

Bone Loss ◽

Dental Implants ◽

Clinical Results ◽

Marginal Bone Loss ◽

Significant Difference ◽

Distal Aspect ◽

The Stability ◽

Maxilla And Mandible ◽

Implant Loading

The aim of the present investigation is to evaluate the implant therapy outcomes over a period of 5 years and to analyze several patient risk factors influencing the stability of the peri-implant tissues. Seventy-eight patients were consecutively treated between 2009 and 2017 and restored with implant-supported fixed prostheses. The following inclusion criteria were considered: partial or complete edentulism; residual bone volume of at least 3.3 mm in diameter and 8 mm in length; a favorable relationship between maxilla and mandible; at least a minimum 5 year follow-up for each implant included in the statistical analysis. Intraoral radiographs were taken at implant loading and every 12 months during the follow-up visits. They were subsequently stored on a personal computer and analyzed to determine the changes in bone level. Seventy-eight patients receiving 209 implants completed a minimum follow-up period of 5 years. One-hundred dental implants were inserted in the maxilla while 109 were placed in the mandible. Eleven (14.1%) out of 78 treated patients who received 29 (13.9%) dental implants were considered as drop-outs. On the whole, peri-implantitis was diagnosed in three implants. The average final pocket probing depth at implant level was 2.5 ± 1.2 mm. The average final bone loss after 5 years was 0.3 ± 0.4 mm, both at the mesial and distal aspect of the implant. The effects of the prosthesis type, sex and implant site did not statistically influence the marginal bone loss; on the contrary, a statistically significant difference regarding marginal bone loss was detected between smoker and non-smoker patients (p = 0.021). Implants with internal-conical abutment connection showed stable peri-implant bone levels at the medium-term follow-up. Nevertheless, further prospective long-term clinical studies are necessary to confirm these data.

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Implant Placement Following Crestal Sinus Lift with Sequential Drills and Osteotomes: Five Years after Final Loading Results from a Retrospective Study

Journal of Functional Biomaterials ◽

10.3390/jfb12010010 ◽

2021 ◽

Vol 12 (1) ◽

pp. 10

Author(s):

Aurea Immacolata Lumbau ◽

Silvio Mario Meloni ◽

Marco Tallarico ◽

Luca Melis ◽

Giovanni Spano ◽

...

Keyword(s):

Retrospective Study ◽

Bone Loss ◽

Alveolar Bone ◽

Sinus Lift ◽

Combined Approach ◽

Success Rates ◽

Marginal Bone Loss ◽

Implant Placement ◽

Prosthetic Complications

The aim of this retrospective study was to clinically evaluate the five-year outcomes of implants placed following a combined approach to the sinus, consisting of sequential drills and osteotomes. Medical records of patients with implants placed in combination with crestal sinus lift using sequential drills and osteotomes, with a residual alveolar bone crest between 4 to 8 mm, and a follow-up of at least five years after final loading, were evaluated. Outcomes were implant and prosthetic survival and success rates, any complication, and marginal bone loss. Data from 96 patients (53 women and 43 men; mean age 54.7 years; range 23–79 years) were collected. A total of 105 single implants were analyzed. After five years of function, two implants were lost and two prostheses failed. No major biological or prosthetic complications occurred. At the five-year examination, the marginal bone loss was 1.24 ± 0.28 mm. Within the limitations of this retrospective study it can be concluded that implants placed following a combined approach to the sinus consisting of sequential drills and osteotomes seem to be a viable option for the treatment of posterior atrophic edentulous maxilla.

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The Difference of Marginal Bone Preservation between Dental Implants with Non-Threaded or Micro-Threaded Collar Designs

Coatings ◽

10.3390/coatings11101232 ◽

2021 ◽

Vol 11 (10) ◽

pp. 1232

Author(s):

Mazen Almasri

Keyword(s):

Bone Loss ◽

Dental Implants ◽

P Value ◽

Marginal Bone Loss ◽

Significant Difference ◽

Bone Preservation ◽

The Mean ◽

The Difference ◽

Implant System ◽

Metal Show

This study analyzes the marginal bone loss (MBL) among dental implants characterized with non-threaded collar design (NT) when compared to the more classic micro-threaded collar design (MC) as such might reflect the future dentogengival esthetics, implant metal show, and mucositis. A total of 112 patients who received 311 implants have been included in the study and analyzed for their postoperative MBL using sequential periapical radiographs. The prevalence of postoperative peri-implant mucositis was recorded as well. The periapical radiographic comparison was performed between the immediate postoperative record and at the 24-month recall visit. Among the 311 implants, 124 (39.9%) had NT implants, and 187 (60.1%) had MC implants. Out of the 112 patients, 37 (44.6%) were females, and 10 (34.5%) were males included in the NT group. In contrast, 46 (55.4%) females and 19 (65.5%) males were in the MC group. The mean age among the two groups was 41.43 ± 15.900 and 46.68 ± 16.070, respectively. In contrast, the mean MBL among the groups were 0.544 ± 0.7129 and 0.061 ± 0.2648, respectively. The change in MBL was not positively correlated with gender (p-value = 0.154) or age (p-value = 0.115) in both groups. However, there was a significant difference (p-value = 0.001, X2 = 62.796, Df = 4) of MBL between the two implant systems themselves. The MBL was higher in people implanted with the NT system when compared to MC. Therefore, the MC implant system can be a better choice for marginal bone preservation, especially in restoring esthetically demanding areas in the mouth.

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Rehabilitation of the Atrophic Maxilla With Tilted Implants: Review of the Literature

Journal of Oral Implantology ◽

10.1563/aaid-joi-d-11-00068 ◽

2013 ◽

Vol 39 (5) ◽

pp. 625-632 ◽

Cited By ~ 15

Author(s):

David Peñarrocha-Oltra ◽

Eugenia Candel-Martí ◽

Javier Ata-Ali ◽

María Peñarrocha-Diago

Keyword(s):

Patient Satisfaction ◽

Bone Loss ◽

Case Reports ◽

Success Rates ◽

Marginal Bone Loss ◽

High Patient Satisfaction ◽

Atrophic Maxilla ◽

Clinical Series ◽

Implant Loading

We review the evidence-based literature on the use of tilted implants in the rehabilitation of patients with maxillary atrophy. Studies from 1999 to 2010 on patients with atrophic maxilla rehabilitated with tilted implants were reviewed. Clinical series with at least 10 patients rehabilitated using tilted implants and a follow-up of at least 12 months after prosthetic load were included. Case reports and studies with missing data were excluded. In each study the following was assessed: surgical technique, prosthesis type, timing of implant loading, success rate and marginal bone loss of tilted and axial implants, complications and patient satisfaction level. Thirteen studies were included, reporting a total of 782 tilted and 666 axial implants in 319 patients. Success rates went from 91.3% to 100% for axial implants and from 92.1% to 100% for tilted implants; radiographic marginal bone loss went from 0.4 mm to 0.92 mm in tilted implants and from 0.35 mm to 1.21 mm in axial implants. No statistically significant differences were found in any of the studies. No surgical complications and only minor prosthetic complications were reported. High patient satisfaction was found with all types of prosthesis (full-arch fixed, partial fixed and overdentures) placed over tilted implants. The literature on tilted implants shows that implants placed with this technique, both used alone and combined with axially placed implants, and rehabilitated with different prosthetic options have high success rates, minimal complications and high patient satisfaction. However, lack of homogeneity among studies and relatively short follow-up periods for most studies make necessary more studies.

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Survival and Marginal Bone Loss of Dental Implants Supporting Cad-Cam Angled Channel Restorations: A Split-Mouth Retrospective Study

European Journal of Dentistry ◽

10.1055/s-0040-1709895 ◽

2020 ◽

Vol 14 (02) ◽

pp. 194-199 ◽

Cited By ~ 1

Author(s):

Eduardo Anitua ◽

Sofía Fernández-de-Retana ◽

Mohammad Hamdan Alkhraisat

Keyword(s):

Retrospective Study ◽

Bone Loss ◽

Dental Implants ◽

Implant Survival ◽

Marginal Bone Loss ◽

Screw Channel ◽

Computer Aided ◽

Cad Cam ◽

The Mean

Abstract Objective The aim of this study was to determine whether the screw emergence angulation correction by computer-aided design (CAD)-computer-aided manufacturing (CAM) can influence implant survival and marginal bone stability. Materials and Methods This was a controlled split-mouth retrospective study of angled channel restorations. The dental implants supporting the prosthesis were divided into the following two groups: the first group (Group 1) included the implants that required screw channel angulation, while the second group (Group 2) included the implants that did not require this correction to screw the prosthesis to the implant. The main outcome variables were implant survival and marginal bone loss (MBL). Results A total of 68 dental implants placed in 22 patients were included in the final cohort. The mean follow-up time was 39.65 ± 15.20 months. None of the studied implants failed during the follow-up period and the mean MBL was − 0.29 ± 0.51 mm at the end of the follow-up. No statistical differences in the MBL were observed between the two groups of the study (-0.18 ± 0.51 and − 0.23 ± 0.58 mm, respectively). Conclusion The angulation of the screw channel with CAD-CAM technology resulted in good clinical outcomes and did not affect MBL. Thus, the angulated screw channel might be considered an alternative to face undesired screw emergencies. Future prospective clinical studies should confirm these results.

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Alveolar Ridge Augmentation with Titanium Mesh. A Retrospective Clinical Study

The Open Dentistry Journal ◽

10.2174/1874210601408010148 ◽

2014 ◽

Vol 8 (1) ◽

pp. 148-158 ◽

Cited By ~ 40

Author(s):

Pier P Poli ◽

Mario Beretta ◽

Marco Cicciù ◽

Carlo Maiorana

Keyword(s):

Bone Loss ◽

Bone Volume ◽

Autogenous Bone ◽

Bovine Bone ◽

Alveolar Ridge ◽

Ridge Augmentation ◽

Implant Placement ◽

Retrospective Clinical Study ◽

Ti Mesh

An adequate amount of bone all around the implant surface is essential in order to obtain long-term success of implant restoration. Several techniques have been described to augment alveolar bone volume in critical clinical situations, including guided bone regeneration, based on the use of barrier membranes to prevent ingrowth of the epithelial and gingival connective tissue cells. To achieve this goal, the use of barriers made of titanium micromesh has been advocated. A total of 13 patients were selected for alveolar ridge reconstruction treatment prior to implant placement. Each patient underwent a tridimensional bone augmentation by means of a Ti-mesh filled with intraoral autogenous bone mixed with deproteinized anorganic bovine bone in a 1:1 ratio. Implants were placed after a healing period of 6 months. Panoramic x-rays were performed after each surgical procedure and during the follow-up recalls. Software was used to measure the mesial and the distal peri-implant bone loss around each implant. The mean peri-implant bone loss was 1.743 mm on the mesial side and 1.913 mm on the distal side, from the top of the implant head to the first visible bone-implant contact, at a mean follow-up of 88 months. The use of Ti-mesh allows the regeneration of sufficient bone volume for ideal implant placement. The clinical advantages related to this technique include the possibility of correcting severe vertical atrophies associated with considerable reductions in width and the lack of major complications if soft-tissue dehiscence and mesh exposures do occur.

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Crown-to-implant ratio of short locking-taper implants placed in posterior areas of the maxilla: a retrospective study 2 years after loading

Stomatologist Minsk ◽

10.32993/stomatologist.2017.1(24).1 ◽

2017 ◽

pp. 89-94

Author(s):

Lombardo Giorgio ◽

Pighi Jacopo ◽

Corrocher Giovanni ◽

Simancas Pallares Miguel Angel ◽

Marincola Mauro ◽

...

Keyword(s):

Retrospective Study ◽

Clinical Study ◽

Bone Loss ◽

Ratio Analysis ◽

Marginal Bone Loss ◽

Cumulative Survival ◽

Retrospective Clinical Study ◽

The Mean ◽

Short Implant

Introduction: The purpose was to study any relationship between crown-to-implant ratio and peri-implant bone loss of short, plateau-design, locking taper implants in posterior maxillary areas. Methods: This retrospective clinical study was conducted between May 2013 and September 2013. The sample was composed of patients who had received at least one short implant(5-to-8-mm-long) between January 2009 and December 2011. The outcome variables were implant failure and peri-implant bone loss in relation to crown-to-implant ratio. Analysis of variance (ANOVA) was used to check out correlations between crown-to-implant ratio and peri-implant bone loss. Results: Thirty-six subject who received 79 locking-taper implants were followed for an average of 24 months. Four implants failed, giving a cumulative survival rate (CSR) of 94.9%. The mean crown-to-implant ratio was 2.01. The peri-implant bone loss between prosthetic loading and last recall was 0.21 mm. No statistically significant relationship was observed between increasing crown-implant ratios and marginal bone loss (P = .93). Conclusion: The crown-to-implant ratio, although high, was not associated to increased bone loss. However further studies with longer follow-up are needed to confirm our data.

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