Aesthetic Outcomes and Peri-Implant Health of Angled Screw Retained Implant Restorations Compared with Cement Retained Crowns: Medium Term Follow-Up

Single tooth implant restorations in the aesthetic area are a demanding challenge. If a complete osseointegration is mandatory, the final result has to result in a higher standard of biomimetic and soft tissue health among natural teeth. This outcome is traditionally pursued by cementing crowns over individualized abutments. However, in recent years, the need for controlling peri-implant health and the preference towards a retrievable solution has led to an increase in screw-retained crowns, which is not always applicable when the implant axis is not ideal. In the aesthetic area, the use of a novel technical solution represented by the angled screw channel (ASC) of the abutment has been proposed in order to match the advantages of the screwed solution with the aesthetic demands. The aim of this study was to compare ASC crowns to cemented crowns (CC) in single implant restorations using the white esthetic score (WES) and pink esthetic score (PES) at the crown delivery and at a follow-up of a minimum of 2 years. Peri-implant health and marginal bone loss (MBL) were also evaluated. The mean follow-up was 44.3 months, with a mean MBL of 0.22 mm in the ASC group and 0.29 mm in the CC group. The total WES/PES score was 16.6 for ASC, compared with 17.3 for CC at baseline, and 16.2 and 17.1, respectively, at follow-up. Both of the groups reached a high WES/PES, and this was maintained over time, without signs of peri-implant diseases or bone loss, regardless of the choice of connection. In conclusion, ASC can be adopted in cases where the implant axis is not ideal, with aesthetic and functional results that are comparable to implants restored by cemented crowns.

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Peri-implant conditions and marginal bone loss around cemented and screw-retained single implant crowns in posterior regions: A retrospective cohort study with up to 4 years follow-up

PLoS ONE ◽

10.1371/journal.pone.0191717 ◽

2018 ◽

Vol 13 (2) ◽

pp. e0191717 ◽

Cited By ~ 2

Author(s):

Jun-Yu Shi ◽

Jie-Ni ◽

Long-fei Zhuang ◽

Xiao-Meng Zhang ◽

Lin-Feng Fan ◽

...

Keyword(s):

Cohort Study ◽

Bone Loss ◽

Retrospective Cohort Study ◽

Retrospective Cohort ◽

Marginal Bone Loss ◽

Single Implant

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A Clinical and Radiographic Evaluation of Zirconia Dental Implants: 10-Year Follow-Up

International Journal of Dentistry ◽

10.1155/2021/7534607 ◽

2021 ◽

Vol 2021 ◽

pp. 1-10

Author(s):

Andrea Enrico Borgonovo ◽

Susanna Ferrario ◽

Carlo Maiorana ◽

Virna Vavassori ◽

Rachele Censi ◽

...

Keyword(s):

Bone Loss ◽

Dental Implants ◽

Clinical Success ◽

Radiographic Evaluation ◽

Success Rates ◽

Marginal Bone Loss ◽

Single Tooth ◽

Zirconia Implants

Purpose. The aim is to evaluate the survival and success rates, as well as the marginal bone loss (MBL) and periodontal indexes, of zirconia implants with 10-year follow-up. Materials and Methods. 10 patients were selected and 26 one-piece zirconia implants were used for the rehabilitation of single tooth or partially edentulous ridge. After 10 years, a clinical-radiographic evaluation was performed in order to estimate peri-implant tissue health and marginal bone loss. Results. The survival and success rates were 100%. The average marginal bone loss from baseline to 120 months after surgery was 0.92 ± 0.97 mm. Conclusion. One-piece zirconia dental implants are characterised by high biocompatibility, low plaque adhesion, and absence of microgap that can be related to the clinical success of these implants.

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Effect of Opposite Tooth Condition on Marginal Bone Loss around Submerged Dental Implants: A Retrospective Study with a 3-Year Follow-Up

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph182010715 ◽

2021 ◽

Vol 18 (20) ◽

pp. 10715

Author(s):

Odontuya Dorj ◽

Hsi-Kuei Lin ◽

Eisner Salamanca ◽

Yu-Hwa Pan ◽

Yi-Fan Wu ◽

...

Keyword(s):

Retrospective Study ◽

Bone Loss ◽

Dental Implants ◽

Marginal Bone Loss ◽

Bone Level ◽

Natural Teeth ◽

Marginal Bone Level

Background: The objective of this study was to evaluate the effects of opposite tooth conditions on change in marginal bone level (MBL) around submerged dental implants. Materials and methods: The study included healthy patients with one or two implants. Structures opposite implants were either natural teeth (NT) or fixed restorations (FRs). MBLs were measured on digital periapical radiographs at the mesial and distal aspects of each implant. Results: Sixty implants were inserted by the 3-year follow-up. Mean MBLs for NT were 0.21 ± 0.33 mm before prosthetic loading and 0.30 ± 0.41 mm 3 years later (p = 0.001). Mean MBLs with FRs were 0.36 ± 0.45 mm before loading and 0.53 ± 0.50 mm 3 years later (p < 0.001). Changes in mean MBL from the 6-month follow-up to the 1- and 3-year follow-ups were statistically significant (p < 0.01) for implants opposite NT. However, changes in mean MBL from the 6-month follow-up to the 1-year (p = 0.161) and 3-year follow-ups (p = 1.000) were not significant for implants opposite FRs. Between baseline and the 3-year follow-up, MBL change was relatively small and did not differ regarding NT and FRs. Conclusion: Bone loss was greater if submerged dental implants were opposed by FRs. MBLs around submerged implants continued to change after 3 years if NT opposed implants.

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Parameters Associated with Marginal Bone Loss around Implant after Prosthetic Loading

Brazilian Dental Journal ◽

10.1590/0103-6440201600874 ◽

2016 ◽

Vol 27 (3) ◽

pp. 292-297 ◽

Cited By ~ 13

Author(s):

Clarissa D. Koller ◽

Tatiana Pereira-Cenci ◽

Noéli Boscato

Keyword(s):

Survival Rate ◽

Bone Loss ◽

Cox Regression ◽

Prosthetic Design ◽

Marginal Bone Loss ◽

Maintenance Program ◽

Lateral Group ◽

Single Tooth ◽

Anterior Guidance

Abstract This study evaluated retrospectively the association among occlusal, periodontal and implant-prosthetic parameters and marginal bone loss (MBL) around implants and survival rate at 5.7 ±3.2 years of follow-up after prosthetic loading. Eighty-two patients received 164 external hexagon implants. After the standard healing period (3 to 6 months), the implants were restored with single-tooth or up to three splinted crowns. All patients were followed according to a strict maintenance program with regular recalls and clinically evaluated by a calibrated examiner. The MBL measurements taken from standardized radiographs made at permanent crown placement (baseline) and after the last evaluation were calculated considering occlusal, periodontal and implant-prosthetic parameters. Veneer fractures and abutment loosening were not considered failure. Two implants failed during the follow-up period, resulting in a survival rate of 98.8%. Cox regression analyses showed MBL associated with non-working side contacts (p=0.047), inadequate anterior guidance (p=0.001), lateral group guidance involving teeth and implants (p=0.015), periimplant plaque index (p=0.035), prosthetic design (p=0.030) and retention (p=0.006). Inadequate occlusal pattern guide, presence of visible plaque, and cemented and splinted implant-supported restoration were associated with greater MBL around the implant.

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3D Considerations and Outcomes of Immediate Single Implant Insertion and Provisionalization at the Maxillary Esthetic Zone: A Long-Term Retrospective Follow-Up Study of Up to 18 Years

Journal of Clinical Medicine ◽

10.3390/jcm10184138 ◽

2021 ◽

Vol 10 (18) ◽

pp. 4138

Author(s):

Eitan Mijiritsky ◽

Antonio Barone ◽

Ihsan Caglar Cinar ◽

Katalin Nagy ◽

Maayan Shacham

Keyword(s):

Success Rate ◽

Radiographic Evaluation ◽

Marginal Bone Loss ◽

Follow Up Study ◽

Single Tooth ◽

Bone Deposition ◽

Immediate Implantation ◽

Single Implant

Aim: Long-term studies addressing the outcomes of single immediate implantation and provisionalization at the maxillary esthetic zone are needed. The current study aimed to assess such outcomes along a follow-up period of up to 18 years. Materials and methods: The current study is a continuation follow-up of our previously published up to 6-year follow-up study, dated between the years 2002–2008, performed in a private clinical practice in Tel-Aviv, Israel. A total of 15 patients (23 implants) who had been treated for single-tooth replacement at the maxillary esthetic zone since 2002, underwent clinical and radiographic follow-up evaluations. Primary outcomes included mean Marginal Bone Levels (MBL), with Bleeding on Probing (BOP), implant success rate, prosthetic and esthetic complications evaluated as secondary outcomes. Results: The implant success rate was at 100%. Bone remodeling processes were observed over the follow-up period, with 0.9 mm mean marginal bone loss observed during the first 6 years of observation, followed by −0.13 ± 0.06 mm mean loss after 6 to 18 years. The last finding suggests bone deposition, as reported by other studies (Donati et al., 2012). At the final radiographic evaluation, a mean MBL of 1.35 mm ± 0.16 was demonstrated. No differences with respect to implant type or site were found. A generalized absence of BOP and esthetic complications occurred in two cases as a result of continuous adjacent teeth eruption versus obvious implant ankylosis. Conclusions: Adhering to careful clinical protocols and 3D bone to implant considerations while immediately placing an anterior implant, this treatment approach offers both stable and esthetically acceptable results for the replacement of missing teeth at the maxillary esthetic zone.

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Evaluation of biological changes at the proximal contacts between single-tooth implant-supported prosthesis and the adjacent natural teeth – An in vivo study

The Journal of Indian Prosthodontic Society ◽

10.4103/jips.jips_155_20 ◽

2020 ◽

Vol 20 (4) ◽

pp. 378

Author(s):

VizaikumarVasudha Nelluri ◽

MariaRoseme Kandathilparambil ◽

BhanuChander Vayadadi ◽

NaveenKumar Gajjam

Keyword(s):

In Vivo Study ◽

Single Tooth ◽

Natural Teeth ◽

Single Tooth Implant

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Digital versus Analog Procedures for the Prosthetic Restoration of Single Implants: A Randomized Controlled Trial with 1 Year of Follow-Up

BioMed Research International ◽

10.1155/2018/5325032 ◽

2018 ◽

Vol 2018 ◽

pp. 1-20 ◽

Cited By ~ 16

Author(s):

Francesco Mangano ◽

Giovanni Veronesi

Keyword(s):

Treatment Time ◽

Controlled Trial ◽

Marginal Bone Loss ◽

Digital Workflow ◽

Digital Impressions ◽

Monolithic Zirconia ◽

Ceramic Crown ◽

To Receive ◽

Single Implant

Aim. To compare the outcome of digital versus analog procedures for the restoration of single implants. Methods. Over a two-year period (2014-2016), all patients who had been treated in a dental center with a single implant were randomly assigned to receive either a monolithic zirconia crown, fabricated with digital workflow (test group), or a metal-ceramic crown, fabricated with analog workflow (control group). All patients were followed for 1 year after the delivery of the final crown. The outcomes were success, complications, peri-implant marginal bone loss (PIMBL), patient satisfaction, and time and cost of the treatment. Results. 50 patients (22 males, 28 females; mean age 52.6±13.4 years) were randomly assigned to one of the groups (25 per group). Both workflows showed high success (92%) and low complication rate (8%). No significant differences were found in the mean PIMBL between test (0.39±0.29mm) and control (0.54±0.32mm) groups. Patients preferred digital impressions. Taking the impression took half the time in the test group (20±5min) than in the control (50±7min) group. When calculating active working time, workflow in the test group was more time-efficient than in the control group, for provisional (70±15min versus 340±37min) and final crowns (29±9min versus 260±26min). The digital procedure presented lower costs than the analog (€277.3 versus €392.2). Conclusions. No significant clinical or radiographic differences were found between digital and analog procedures; however, the digital workflow was preferred by patients; it reduced active treatment time and costs. The present study is registered in the ISRCTN (http://www.isrctn.com/ISRCTN36259164) with number 36259164.

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