scholarly journals Effect of Rough Surface Platforms on the Mucosal Attachment and the Marginal Bone Loss of Implants: A Dog Study

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 802 ◽  
Author(s):  
Javier Montero ◽  
Alberto Fernández-Ruiz ◽  
Beatriz Pardal-Peláez ◽  
Alvaro Jiménez-Guerra ◽  
Eugenio Velasco-Ortega ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Bone Resorption ◽  
Bone Loss ◽  
Linear Regression Analysis ◽  
Butt Joint ◽  
Marginal Bone Loss ◽  
Machined Surface ◽  
Bony Plate ◽  
Immediate Implants ◽  
Tissue Attachment

The preservation of peri-implant tissues is an important factor for implant success. This study aimed to assess the influence of the surface features of a butt-joint platform on soft-tissue attachment and bone resorption after immediate or delayed implant placement. All premolars and first molars of eight Beagle dogs were extracted on one mandible side. Twelve-weeks later, the same surgery was developed on the other side. Five implants with different platform surface configurations were randomly inserted into the post-extracted-sockets. On the healed side, the same five different implants were randomly placed. Implants were inserted 1 mm subcrestal to the buccal bony plate and were connected to abutments. The primary outcome variables were the supracrestal soft tissue (SST) adaptation and the bone resorption related to the implant shoulder. The SST height was significantly larger in immediate implants (IC95% 3.9–4.9 mm) compared to delayed implants (IC95% 3.1–3.5 mm). Marginal bone loss tended to be higher in immediate implants (IC95% 0.4–0.9 mm) than in delayed implants (IC95% 0.3–0.8 mm). Linear-regression analysis suggested that the SST height was significantly affected by the configuration of the platform (0.3–1.9 mm). Roughened surface platforms resulted in higher SST height when compared to machined surface platforms. Marginal bone loss was less pronounced in roughened designs.

The Microtomographic Evaluation of Marginal Bone Resorption of Immediately Loaded Scalloped Design Implant With Various Microthread Configurations in Canine Mandible: Pilot Study

2010 ◽  
Vol 36 (5) ◽  
pp. 357-362 ◽  
Author(s):  
Young-Seok Park ◽  
Seung-Pyo Lee ◽  
Chong-Hyun Han ◽  
Joo Hyun Kwon ◽  
Young-Chul Jung
Keyword(s):  
Pilot Study ◽  
Bone Resorption ◽  
Bone Loss ◽  
Titanium Implant ◽  
Marginal Bone Loss ◽  
Future Studies ◽  
Preliminary Study ◽  
Type 3

Abstract This study was undertaken to evaluate the effect of microthread geometry of scalloped design implant on marginal bone resorption. Four types of scalloped design titanium implant specimens were prepared. The type 1 implant had a machined scalloped collar, type 2 had a sandblasted and acid-etched scalloped collar, type 3 had horizontal microthreads, and type 4 had parabolic microthreads, which are parallel with the scalloped conical margin. Two implants of a type were randomly installed immediately after extraction in the mandible of a beagle dog. Definitive prostheses were delivered immediately after surgery. After 12 weeks of healing, the dog was sacrificed and microtomography was performed. Type 4 specimens showed a marginal bone loss pattern definitively analogous to the scalloped margin. In this preliminary study, microthread geometry affected the marginal bone resorption pattern of scalloped design implants. However, additional specimens and more controlled conditions should be applied in future studies to confirm these results.

scholarly journals Peri-Implant Behavior of Sloped Shoulder Dental Implants Used for All-On-Four Protocols: An Histomorphometric Analysis in Dogs

Materials ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 119 ◽  
Author(s):  
Jose Calvo Guirado ◽  
Aldo Lucero-Sánchez ◽  
Ana Boquete Castro ◽  
Marcus Abboud ◽  
Sergio Gehrke ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Bone Loss ◽  
Dental Implants ◽  
Test Group ◽  
Control Group ◽  
Histomorphometric Analysis ◽  
Tissue Thickness ◽  
Marginal Bone Loss ◽  
Soft Tissue Thickness ◽  
The Mean

The aim of this study was to evaluate the soft tissue thickness and marginal bone loss around dental implants with sloped micro-threaded shoulder (30° angle) in comparing with conventional design, inserted 30° degrees angulated in post extraction sockets and immediate loaded with temporary prosthesis simulating the all-on-four protocol. Materials and Methods: Six fox hound dogs received forty-eight post extraction dental implants with the different diameter and length (Medentika, Germany), but with different neck configurations. Two group of implants were inserted 1mm subcrestal. Control group has a micro-threaded neck and the Test group has a sloped microthreaded neck. Immediate loading was applied using a constructed metallic structure. After three months, soft and hard tissue levels were assessed by histomorphometric analysis. Results: The mean soft tissue thickness (STT) was 2.5 ± 0.2 mm for the Control group and 3.3 ± 0.3 mm for Test group (p = 0.036), meanwhile the mean marginal bone loss (MBL) was 1.53 ± 0.34 mm for Control group and, 1.62 ± 0.22 mm for Test group (p > 0.05). Conclusions: Within the limitations of this experimental model in dogs, the findings showed that dental implants with microthreaded and microthreaded sloped necks installed in immediate post extraction sites with immediate load, presented a comparable perimplant tissue behavior.

Evaluation of proximal bone loss around 2 commercial brands of SLA-surfaced implants and investigating possible effective factors

2020 ◽  
Author(s):  
Abbas Karimi ◽  
Nahid Azizimoghadam ◽  
Elahe Soltanmohamadi Borujeni
Keyword(s):  
Bone Resorption ◽  
Bone Loss ◽  
Dental Implants ◽  
Clinical Success ◽  
Pearson Correlation ◽  
Marginal Bone Loss ◽  
Effective Factors ◽  
Preprosthetic Surgery ◽  
Dental Implantation ◽  
Significant Difference

Introduction: The long term clinical success of dental implants depends on the stability of crestal bone level. Different dental implantation systems focus on micro-and macro-design to reduce late bone resorption. The purpose of this study was to evaluate bone loss at the proximal (mesial and distal) surfaces of SLA implants from 2 different companies. Materials and Methods: This retrospective cross-sectional study was done on 48 patients receiving 161 SLA-surfaced (Straumann and Dentium) dental implants. The marginal bone loss was measured at mesial & distal sides of the implants on peri-apical X-ray images. The effective factors considered in this study were patients age, implant brand, time passed from fixture placement, preprosthetic surgery and type of prosthetic treatment that were obtained from patient records & interviews. Results: Average mesial and distal bone loss was 1.50±1.359 and 1.517±1.3465 respectively. Pearson correlation coefficient indicates that 1) time passed from fixture placement, 2) commercial brand, 3) history of pre-prosthetic surgery and 4) age affected the amount of bone loss. Conclusion: SLA-surfaced dental implants showed an acceptable amount of bone resorption and no statistically significant difference was observed between commercial brands.

scholarly journals One-Year Results of a Randomized Controlled Clinical Trial of Immediately Loaded Short Implants Placed in the Lower Posterior Single Molar Using a Complete Digital Workflow

2019 ◽  
Vol 9 (7) ◽  
pp. 1282 ◽  
Author(s):  
Yeon-Wha Baek ◽  
Young-Jun Lim ◽  
Jungwon Lee ◽  
Ki-Tae Koo ◽  
Myung-Joo Kim ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Soft Tissue ◽  
Bone Loss ◽  
Controlled Clinical Trial ◽  
Insertion Torque ◽  
Marginal Bone Loss ◽  
Model Free ◽  
Short Implants ◽  
Significant Difference ◽  
Computer Aided

The purpose of this randomized clinical trial is to evaluate immediately loaded single implants with varying lengths in the posterior mandible using a fully digital, model-free prosthetic-driven implant planning pathway, and to compare clinical and radiological outcomes of short and long implants. The 52 patients with the single tooth missing in the posterior molar regions of the mandible were randomly assigned to the control (CMI IS-III active® long implant; 5.0 × 10 mm) and experimental (CMI IS-III active® short implant; 5.5 × 6.6, 7.3, 8.5 mm) groups. For each patient, a single implant was placed using the computer aided surgical template and all prostheses were fabricated by means of computer-aided design/computer-aided manufacturing (CAD/CAM) system on the virtual model. The patients received provisional and definitive monolithic zirconia prostheses at 1 week and 12 weeks after implant surgery, respectively. The implant stability quotient (ISQ) measurements and periapical radiographs were taken and peri-implant parameters were evaluated at 1, 3, 4, 8, 12, 24, 36, and 48 weeks after surgery. Nineteen long implants and 27 short implants were finally used for the statistical analysis. There was no significant difference between the groups in terms of insertion torque, ISQ values (except 3 weeks), marginal bone loss, and peri-implant soft tissue parameters (p > 0.05). Both groups exhibited no stability dip during the early phase of healing. The average marginal bone loss from the baseline of implant placement for the control and experimental groups was −0.07 and 0.03 mm after 12 weeks and 0.06 and 0.05 mm after 48 weeks. All of the soft tissue parameters were within normal limits. Within the limits of the short term follow up, immediate loading of short single implants can be considered as one of predictable treatment modality in mandible with reduced bone height when primary stability can be achieved.

scholarly journals Does the Laser-Microtextured Short Implant Collar Design Reduce Marginal Bone Loss in Comparison with a Machined Collar?

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
B. Alper Gultekin ◽  
Ali Sirali ◽  
Pinar Gultekin ◽  
Serdar Yalcin ◽  
Eitan Mijiritsky
Keyword(s):  
Bone Resorption ◽  
Bone Loss ◽  
Marginal Bone Loss ◽  
Posterior Teeth ◽  
Cumulative Survival ◽  
Probing Depth ◽  
Before And After ◽  
Retrospective Study Design ◽  
Short Implant

Purpose. To compare marginal bone loss between subgingivally placed short-collar implants with machined collars and those with machined and laser-microtextured collars.Materials and Methods. The investigators used a retrospective study design and included patients who needed missing posterior teeth replaced with implants. Short-collar implants with identical geometries were divided into two groups: an M group, machined collar; and an L group, machined and laser-microtextured collar. Implants were evaluated according to marginal bone loss, implant success, and probing depth (PD) at 3 years of follow-up.Results. Sixty-two patients received 103 implants (56 in the M group and 47 in the L group). The cumulative survival rate was 100%. All implants showed clinically acceptable marginal bone loss, although bone resorption was lower in the L group (0.49 mm) than in the M group (1.38 mm) at 3 years (p<0.01). A significantly shallower PD was found for the implants in the L group during follow-up (p<0.01).Conclusions. Our results suggest predictable outcomes with regard to bone loss for both groups; however, bone resorption was less in the L group than in the M group before and after loading. The laser-microtextured collar implant may provide a shallower PD than the machined collar implant.

scholarly journals Biological Oriented Immediate Loading: A New Mathematical Implant Vertical Insertion Protocol, Five-Year Follow-Up Study

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 387
Author(s):  
Fabrizio Bambini ◽  
Giulia Orilisi ◽  
Alessandro Quaranta ◽  
Lucia Memè
Keyword(s):  
Bone Resorption ◽  
Bone Loss ◽  
Soft Tissues ◽  
Bacterial Colonization ◽  
Radiographic Examination ◽  
Bacterial Invasion ◽  
Immediate Loading ◽  
Vertical Position ◽  
Marginal Bone Loss ◽  
Mathematical Rule

One of the current major challenges in implant therapy is to minimize marginal bone loss around implants, since it can trigger bacterial colonization of the implant’s neck, leading to its failure. The present study aimed (1) to scientifically validate a new mathematical rule based on soft tissues thickness, for choosing the correct implant position with respect to the bone level, in order to provide a better tissue adaptation to the abutment/implant surface to avoid bacterial invasion, and (2) to apply this mathematical rule to the Biological Oriented Immediate Loading (B.O.I.L.) surgical protocol, avoiding peri-implant bone resorption. N. 127 implants were inserted following B.O.I.L. protocol: implants were placed according to the mathematical rule Y = X − 3, which correlates the position of the implant from the bone crest level (Y) with the thickness of the soft tissues (X). All the implants were inserted in fresh extraction sockets, and immediately loaded with temporary abutments and prostheses. Bone levels were evaluated through radiographic examination just after surgical procedure (T0), and after 10 days (10D), 6 months (6M), 1 year (1Y), and 5 years (5Y). After 5 years, the implant survival rate was 100%, with a medium marginal bone loss around implants of 0.0704 mm (SD = 0.169 mm). One-way ANOVA, followed by Tukey’s multiple comparison test was performed for statistical evaluations (p < 0.05). This protocol provided a safe and successful procedure, with a good soft tissue seal against bacterial challenge. The application of the mathematical rule allows the implant placement in a correct vertical position from the bone crest, avoiding bone resorption and bacterial infiltrations. Moreover, the use of Multi Unit Abutment (MUA) determined a stable biological seal, favouring the implant healing and preserving the adhesion of hemidesmosomes to the titanium of MUA.

scholarly journals The effect of soft tissue augmentation on the clinical and radiographical outcomes following immediate implant placement and provisionalization: a systematic review and meta-analysis

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Paolo De Angelis ◽  
Paolo Francesco Manicone ◽  
Edoardo Rella ◽  
Margherita Giorgia Liguori ◽  
Silvio De Angelis ◽  
...  
Keyword(s):  
Systematic Review ◽  
Soft Tissue ◽  
Bone Loss ◽  
Intervention Group ◽  
Tissue Thickness ◽  
Marginal Bone Loss ◽  
Facial Soft Tissue ◽  
Implant Placement ◽  
Soft Tissue Thickness ◽  
Immediate Implant

Abstract Background Nowadays, due to the esthetic and social demands of patients, conventional staged protocols seem to be increasingly replaced by faster, one-step protocols. The purpose of the present systematic review is to assess the peri-implant soft tissue changes after immediate implant placement and provisionalization (IIPP) comparing patients treated with or without a sub-epithelial connective tissue graft (SCTG) when replacing a single tooth in the esthetic region. Methods The present systematic review was written following the PRISMA checklist. Immediate implants placed with a connective tissue graft and without one were compared. The researched primary outcomes were the mid-buccal mucosa level (MBML) facial soft tissue thickness (FSTT) and marginal bone loss (MBL). The weighted mean differences (WMD) were estimated for all three outcomes. Results The change in the mid-buccal mucosa level in the intervention group was significantly higher (WMD 0.54; 95% CI 0.33–0.75), with no indication of heterogeneity (I2 = 16%). The facial soft tissue thickness increased significantly in the intervention group (WMD 0.79; 95% CI 0.37–1.22). The marginal bone loss was significantly higher in the control group (WMD 0.13; 95% CI 0.07–0.18), with no indication of heterogeneity (I2 = 0%). Conclusions The results of the meta-analyses showed a statistically significant reduced change of the marginal bone loss and vestibular recession, as well as higher soft tissue thickness, when a graft was used. The included studies had a short observation time; therefore, studies with longer follow-ups are needed to confirm these findings.

Soft Tissue Preservation and Crestal Bone Loss Around Single-Tooth Implants

2008 ◽  
Vol 34 (4) ◽  
pp. 223-229 ◽  
Author(s):  
Raja Sunitha V ◽  
T. Ramakrishnan ◽  
Sunil Kumar S ◽  
Pamela Emmadi
Keyword(s):  
Soft Tissue ◽  
Bone Resorption ◽  
Bone Loss ◽  
Implant Failure ◽  
Tissue Preservation ◽  
Soft Tissue Preservation ◽  
Healing Period ◽  
Crestal Bone Loss ◽  
Single Tooth ◽  
Flap Elevation

Abstract Maintenance of interdental soft tissue and the need for esthetics are being increasingly recognized as important criteria for implant success. Statistically significant correlations have been found between the incidence of implant failure and vertical bone loss adjacent to implants. Thus, it is widely recognized that peri-implant bone resorption before loading may compromise implant success. This study aims to evaluate the effect of flap elevation on peri-implant bone loss during the healing period. Twenty sites around 10 implants were included in the study, and the effect of 2 different flap designs on the crestal height of bone was evaluated. The results of the study have shown that flap elevation can lead to increased bone loss during the healing period, with statistically significant results up to the 90-day period.

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