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Detection of the genial spinal canal in atrophic mandibles with a CBCT: a cadaver study

Identifieur interne : 005641 ( Ncbi/Checkpoint ); précédent : 005640; suivant : 005642

Detection of the genial spinal canal in atrophic mandibles with a CBCT: a cadaver study

Auteurs : F. Birkenfeld ; M. Becker ; M. Sasse ; V. Gassling ; R. Lucius ; J. Wiltfang ; M. Kern

Source :

Dentomaxillofacial Radiology [ 0250-832X ] ; 2015.

RBID : PMC:4614160

Descripteurs français

KwdFr :
- Atrophie, Cadavre, Femelle, Humains, Implants dentaires, Mandibule (imagerie diagnostique), Mâchoire édentée (imagerie diagnostique), Mâle, Pose d'implant dentaire endo-osseux, Soins préopératoires, Sujet âgé, Tomodensitométrie à faisceau conique.
MESH :
- imagerie diagnostique : Mandibule, Mâchoire édentée.
- Atrophie, Cadavre, Femelle, Humains, Implants dentaires, Mâle, Pose d'implant dentaire endo-osseux, Soins préopératoires, Sujet âgé, Tomodensitométrie à faisceau conique.

English descriptors

KwdEn :
- Aged, Atrophy, Cadaver, Cone-Beam Computed Tomography, Dental Implantation, Endosseous, Dental Implants, Female, Humans, Jaw, Edentulous (diagnostic imaging), Male, Mandible (diagnostic imaging), Preoperative Care.
MESH :
- chemical : Dental Implants.
- diagnostic imaging : Jaw, Edentulous, Mandible.
- Aged, Atrophy, Cadaver, Cone-Beam Computed Tomography, Dental Implantation, Endosseous, Female, Humans, Male, Preoperative Care.

Abstract

Objectives:

The use of a single midline implant to retain a complete mandibular denture when more implants cannot be used is an incipient treatment modality. However, in the mandibular symphysis, the genial spinal canal (GSC) is an anatomical structure with neurovascular content that can be harmed during dental implant surgery. The purpose of the present study was to use CBCT of edentulous atrophic cadaver mandibles and evaluate how often the simulated placement of a single midline implant would contact the GSC if present.

Methods:

CBCT scans of 47 edentulous cadaver mandibles were performed. A digital simulation of the placement of a single midline implant (3.8 × 11.0 mm) was performed, and the implant–GSC contact was evaluated.

Results:

A GSC was detected in the CBCT scan of all atrophic mandibles. In 42 cases (89.4%), the single midline implant contacted the GSC. On average, the five cases without GSC contact had a higher alveolar ridge (4.1 mm) and a lower GSC (0.79 mm) than did the cases with GSC contact.

Conclusions:

CBCT scans can adequately detect the GSC during pre-surgical diagnostics. There is a high risk of implant–GSC contact during surgery of the anterior mandible. However, the clinical relevance of such a contact is not known yet, because none of the clinical studies evaluating a single midline implant has reported any implant–GSC contact-related complications.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4614160

DOI: 10.1259/dmfr.20140290
PubMed: 25411711
PubMed Central: 4614160

Affiliations:

Links to Exploration step

PMC:4614160

Le document en format XML

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<term>Dental Implantation, Endosseous</term>
<term>Dental Implants</term>
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<front><div type="abstract" xml:lang="en"><sec><title>Objectives:</title>
<p>The use of a single midline implant to retain a complete mandibular denture when more implants cannot be used is an incipient treatment modality. However, in the mandibular symphysis, the genial spinal canal (GSC) is an anatomical structure with neurovascular content that can be harmed during dental implant surgery. The purpose of the present study was to use CBCT of edentulous atrophic cadaver mandibles and evaluate how often the simulated placement of a single midline implant would contact the GSC if present.</p>
</sec>
<sec><title>Methods:</title>
<p>CBCT scans of 47 edentulous cadaver mandibles were performed. A digital simulation of the placement of a single midline implant (3.8 × 11.0 mm) was performed, and the implant–GSC contact was evaluated.</p>
</sec>
<sec><title>Results:</title>
<p>A GSC was detected in the CBCT scan of all atrophic mandibles. In 42 cases (89.4%), the single midline implant contacted the GSC. On average, the five cases without GSC contact had a higher alveolar ridge (4.1 mm) and a lower GSC (0.79 mm) than did the cases with GSC contact.</p>
</sec>
<sec><title>Conclusions:</title>
<p>CBCT scans can adequately detect the GSC during pre-surgical diagnostics. There is a high risk of implant–GSC contact during surgery of the anterior mandible. However, the clinical relevance of such a contact is not known yet, because none of the clinical studies evaluating a single midline implant has reported any implant–GSC contact-related complications.</p>
</sec>
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Detection of the genial spinal canal in atrophic mandibles with a CBCT: a cadaver study

Detection of the genial spinal canal in atrophic mandibles with a CBCT: a cadaver study

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki

	Serveur d'exploration sur le patient édenté
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