The transmandibular implant: A 13-year survey of its use

Bosker, Hans; Jordan, Richard; Sindet‐Pedersen, Steen; Koole, R.

doi:10.1016/0278-2391(91)90171-h

Cited by 42 publications

(21 citation statements)

References 7 publications

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“…Group I (20 patients) was treated with an overdenture supported by a Transmandibular Implant according to Bosker* consisting of a base plate, four implant posts, five cortical screws, all made of a gold alloy (13). The transmandibular implant was inserted under general anaesthesia via an extra oral approach.…”

Section: Methodsmentioning

confidence: 99%

“…Masticatory function was assessed both with patient‐based variables as well as with laboratory‐assessed variables. Three strategies were used to treat the extremely resorbed mandible with dental implants and an overdenture: insertion of a transmandibular implant (group I, TMI) according to Bosker (13), augmentation with an autogenous bonegraft (iliac crest), 3 months later followed by the installation of four endosseous implants in the interforaminal region (group II, AUG) (14), the placement of four short endosseous implants in the interforaminal region (group III, SHORT) (15). The aim of this study was to analyse the effects of implant supported overdentures on masticatory function in patients with an extremely resorbed mandible; and to compare masticatory function in patients with an extremely resorbed mandible using three differing types of implant treatment protocols.…”

Section: Introductionmentioning

confidence: 99%

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Masticatory function in patients with an extremely resorbed mandible restored with mandibular implant‐retained overdentures: comparison of three types of treatment protocols

Stellingsma¹,

Slagter

Stegenga³

et al. 2005

J of Oral Rehabilitation

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SUMMARYThe objective of the present study was to analyse the effects of implant supported overdentures on masticatory function in patients with an extremely resorbed mandible, and to compare the masticatory function in these patients using three differing types of implant treatment protocols. The mandibular overdentures were retained by a transmandibular implant, by four endosseous implants following augmentation of the mandible, and by four short endosseous implants, respectively. Sixty patients (50 women, 10 men, mean age 59AE4 years) were randomly allocated to one of the three treatment groups. Masticatory function was assessed before and after treatment using a questionnaire, a masticatory performance test, and a structured interview. The patient-based masticatory function improved significantly. Concerning these parameters there were no significant differences between the three groups before and after treatment. A significant difference existed between the three groups for the laboratory-assessed masticatory function before treatment, but after treatment this difference was no longer significant. From this study it can be concluded that patients with an extremely resorbed mandible and functional complaints of their lower denture report significant improvement in masticatory function after implant-overdenture treatment. Differences in masticatory function between the three studied modalities were not significant after treatment.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Masticatory function in patients with an extremely resorbed mandible restored with mandibular implant‐retained overdentures: comparison of three types of treatment protocols

Stellingsma¹,

Slagter

Stegenga³

et al. 2005

J of Oral Rehabilitation

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show abstract

“…Many studies have been pub lished, reporting success rates ranging from 75 to 100%, with a maximum fol low-up of 24 years1, 3,6,8. Only a few studies8,9 have compared different im plant systems, but, to the best of our knowledge, such a comparison has never been made in a prospective, ran domized clinical trial.…”

mentioning

confidence: 99%

Transmandibular implant versus intramobile cylinder implants: a randomized, prospective clinical trial

Kwakman

Voorsmit

Waas

et al. 1996

International Journal of Oral and Maxillofacial Surgery

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Surg. 1996; 25: 433-438, © Munksgaard, 1996 Abstract. A randomized, controlled clinical trial was conducted to compare two dif ferent implant treatment modalities for edentulous patients with severely resorbed mandibles. In one modality (the IMZ® group), two intramobile cylinder implants were placed, connected by a Dolder bar and provided with an overdenture, and in the other (the TMI group), a transmandibular implant with a triple bar and cantilever ex tensions was placed, likewise provided with an overdenture. The conditions of the overdentures, the peri-implant tissues, and the implants were evaluated. Orthopanto mograms were taken for radiologic evaluation. An overall complication scale which took account of all aspects was devised to compare the results. The follow-up period was 2-4 years, with a mean follow-up of 3 years. The condition of dentures and oral hygiene aspects were comparable for both groups. The complication rate in the TMI group was significantly higher than that in the IMZ group. The scores on the compli cation scale resulted in a significant difference between the TMI and the IMZ groups (Wilcoxon, P~0.0044).

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“…Long‐term success rate for the TMI was demonstrated by Bosker et al1 to be 96.8%. Thus, the TMI is thought to be a reliable implant system.…”

Section: Introductionmentioning

confidence: 92%

“…Thus, the TMI is thought to be a reliable implant system. Although there are some clinical reports for the TMI,1–3 there are a few histological studies for this system 6. In addition, while there are a few postmortem histological studies of osseointegration with endosseous implants,7–12 there are none for the TMI.…”

Section: Introductionmentioning

confidence: 99%

A clinical case report: Interface analysis of a successful well‐functioning transmandibular implant from a cadaver mandible

et al. 2005

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Transmandibular implants (TMI) are indicated both for functional reconstruction of the severely atrophic mandible and when routine augmentation is unpredictable. This study investigates the interface of bone around a TMI, retrieved from the cadaver. The TMI had successfully functioned for 7 years. The mandible was immersed in 10% formaldehyde and sectioned into nine appropriate pieces. Samples were embedded in polymethylmethacrylate, and cut around the transosseous posts and cortical screws in both vertical and horizontal sections. Samples were analyzed at 400 MHz (nominal lateral resolution, 2.5 microm) using a UH3 Scanning Acoustic Microscope (Olympus, Tokyo, Japan). The middle of implant specimens 1-4 were cut to 50 microm, and stained by toluidine blue for light microscopy. Dental X-rays showed no bone resorption around any implant. On a 2-mm lateral scan, almost uniform interface space was seen between bone and implant surface in cortical screws. There are wider spaces around the transmandibular posts in the superior area. Histology revealed the small area of direct contact. There is bone marrow space in the interface, with no significant fibrous tissue. We interpret these results at the interface to be because of adaptation for stress distribution.

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The transmandibular implant: A 13-year survey of its use

Cited by 42 publications

References 7 publications

Masticatory function in patients with an extremely resorbed mandible restored with mandibular implant‐retained overdentures: comparison of three types of treatment protocols

Masticatory function in patients with an extremely resorbed mandible restored with mandibular implant‐retained overdentures: comparison of three types of treatment protocols

Transmandibular implant versus intramobile cylinder implants: a randomized, prospective clinical trial

A clinical case report: Interface analysis of a successful well‐functioning transmandibular implant from a cadaver mandible

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