Tripodal Mandibular Subperiosteal Implant: Basic Sciences, Operational Procedures, and Clinical Data

Linkow, Leonard I.; Wagner, Jon R.; Chanavaz, M.

doi:10.1563/1548-1336(1998)024<0016:tmsibs>2.3.co;2

Cited by 26 publications

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“…Es ist noch nicht geklärt, ob diese Knochenresorption hauptsächlich durch wiederkehrende Entzündungen oder durch den Druck, den die SI auf den Knochen ausüben, verursacht wird [10]. Eine verstärkte Knochenresorption wird verständlich, da das Implantatgerüst direkt auf dem Alveolarknochen platziert wird [7]. Nach Entfernung der SI ist in den meisten Fällen der Kieferknochen so atroph, dass vor der Versorgung mit enossalen Implantaten erst autologer Knochen transplantiert werden muss.…”

Section: Diskussionunclassified

Langzeitergebnisse nach der Insertation von subperiostalen Gerüstimplantaten: Bericht über zwölf Patientenfälle

Zwerger

Abu-Id

Kreusch

2007

Mund Kiefer GesichtsChir

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The subperiosteal dental implantation implant was orginally described in the 1940s. The inadequate long-term results of subperiosteal implants are in contrast to the excellent results documented for endosseus oral implants. Consequently, subperiosteal implants and other soft-tissue-anchored implants should not be used presently. The present report documented twelve patient cases with complications after treatment with subperiosteal implants. Typical complications of SI are implant exposure, inflammation, infection, fistula formation and implant mobility. After removing the SI severe atrophic bone was seen. The placement of osseointegrated oral implants was mostly not possible without autogenous bone grafting. The present report is in conclusion with other studies, that a regular control of patients with subperiosteal implants is necessary. Subperiosteal implants should definitely be removed, if continuous periods of complication occur. The complete oral rehabilitation requires further surgical treatment in the field of preprosthetic surgery.

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Section: Diskussionunclassified

Langzeitergebnisse nach der Insertation von subperiostalen Gerüstimplantaten: Bericht über zwölf Patientenfälle

Zwerger

Abu-Id

Kreusch

2007

Mund Kiefer GesichtsChir

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“…In the past, and before they were abandoned in favour of endosseous implants, there was the possibility of inserting subperiosteal implants in cases of severe bone atrophy [21–23]. …”

Section: Introductionmentioning

confidence: 99%

“…A subperiosteal implant is a type of dental implant that is placed between the periosteum and the residual alveolar bone [21–23]. It usually has two to four transmucosal elements projecting through the mucosa into the oral cavity, connecting the implant to the prosthesis [21–23].…”

Section: Introductionmentioning

confidence: 99%

“…It usually has two to four transmucosal elements projecting through the mucosa into the oral cavity, connecting the implant to the prosthesis [21–23]. …”

Section: Introductionmentioning

confidence: 99%

“…Introduced in the early 1940s in Sweden [21, 24] and then in the United States [24], subperiosteal implants were traditionally made from chrome-cobalt or titanium alloys [24–27]. They were usually placed above the bone, in cases of severe bone resorption of the ridges, and were often immediately loaded with a removable or fixed prosthesis [22, 24, 28].…”

Section: Introductionmentioning

confidence: 99%

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Custom-Made Direct Metal Laser Sintering Titanium Subperiosteal Implants: A Retrospective Clinical Study on 70 Patients

Cerea

Dolcini

2018

BioMed Research International

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Purpose To present a digital technique for the fabrication of custom-made subperiosteal implants and to report on the survival and complication rates encountered when using these fixtures. Methods The data used for this retrospective clinical study were derived from the medical records of five different private dental practices. Inclusion criteria were patients over the age of 60, treated with custom-made direct metal laser sintering (DMLS) titanium subperiosteal implants (Eagle-Grid®, BTK, Dueville, Vicenza) during a two-year period (2014-2015) and restored with fixed restorations; all enrolled patients needed to have complete pre- and postoperative clinical and radiographic documentation, with at least 2 years of follow-up. Exclusion criteria were smoking and bruxism. The main outcomes looked at were implant survival and complications. Results Seventy patients (39 males and 31 females, aged 62-79 years) who had been treated with custom-made DMLS titanium subperiosteal implants were enrolled in this study. After 2 years of follow-up, three implants were lost due to recurrent, untreatable infections; the survival rate was therefore 95.8% (67/70 implants). Four patients reported pain/discomfort/swelling after implant placement; the incidence of immediate postoperative complications was therefore 5.7% (4/70 implants). During the follow-up period, one patient suffered from recurrent infections classified as a biologic complication; the incidence of biologic complications was therefore 1.4% (1/67 surviving implants). Finally, four patients experienced prosthetic problems with their implant-supported restorations during the provisional phase (fracture of the acrylic restoration) and two patients had ceramic chipping of the definitive restoration; the incidence of prosthetic complications was therefore 8.9% (6/67 surviving implants). Conclusions Within the limits of the present study (limited follow-up time and low number of patients treated, retrospective design), the application of custom-made DMLS titanium subperiosteal implants showed satisfactory implant survival (95.8%) and low complication rates. Further studies are needed to confirm the positive outcomes found in this research.

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Submodelling approach to screw‐to‐bone interaction in additively manufactured subperiosteal implant structures

Castrillo

Carnicero

Perera

2023

Numer Methods Biomed Eng

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Thanks to new digital technologies, complex cases of severe maxillary atrophy may now be treated with additively manufactured subperiosteal implant structures (AMSISs). However, there are few studies addressing this topic and most of them focus on the mechanical behaviour of the AMSIS itself without considering its interaction with the maxilla bone. The aim of this study is to provide a methodology based on finite element analysis (FEA) to evaluate the effect of interaction between the maxilla bone and the screws fixing the AMSIS. The mechanical performance of an AMSIS was examined via a FEA based on submodelling. Significant differences were encountered in displacements and reaction forces when bone–screw interaction was considered. Stress in the cortical layer was found to be close to the maximum strength while the trabecular layer seems to have no effect on the results; stresses in the AMSIS are lower than the fatigue stress limit. Finally, the comparison of stresses between models with and without osseointegration shows how stresses drop once osseointegration is complete. The proposed submodelling approach considerably reduces the computational effort and enables both a detailed model of the interaction between the thread of the screws and the bone and an accurate evaluation of displacement and stress fields on the interface. The results have shown that stresses in the cortical bone are highly affected by the initial geometry of the thread inside the bone, which demonstrates the importance of modelling the effect of the thread.

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Tripodal Mandibular Subperiosteal Implant: Basic Sciences, Operational Procedures, and Clinical Data

Cited by 26 publications

References 0 publications

Langzeitergebnisse nach der Insertation von subperiostalen Gerüstimplantaten: Bericht über zwölf Patientenfälle

Langzeitergebnisse nach der Insertation von subperiostalen Gerüstimplantaten: Bericht über zwölf Patientenfälle

Custom-Made Direct Metal Laser Sintering Titanium Subperiosteal Implants: A Retrospective Clinical Study on 70 Patients

Submodelling approach to screw‐to‐bone interaction in additively manufactured subperiosteal implant structures

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