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Tomographic volume evaluation of submandibular fossa in patients requiring dental implants

, : Tomographic volume evaluation of submandibular fossa in patients requiring dental implants. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics 109(1): E32-E36

The aim of this study was to evaluate submandibular fossa volume from multislice CT scans of patients requiring endosseous implants. One hundred spiral computed tomographic (CT) preoperative examinations of patients requiring assessment the lower jaw before implant placement were retrospectively evaluated to determine anatomical variations in bone morphology in the submandibular fossa region. Reformatted cross-sectional images tangential to the mandibular dental arch and distal to the mental foramen border were selected. The deepest area of submandibular fossa or concavity depth was measured on all of the images. To measure the concavity depth, a tangent line was first derived to the lingual surface of the fossa and the deepest point was then selected by moving a perpendicular line across the tangent line. Within our sample we could classify the depth of the submandibular gland fossa as a function of the lingual concavity depth over a range up to a maximum value of 6.6 mm. Mandibular lingual concavity depth could be divided into 3 groups. A lingual concavity (depth > or =2 mm) was observed in 80% of the jaws. In 20% of the cases, there were flat depressions less than 2 mm in depth (Type I) and in 52% of the cases the concavities were 2 to 3 mm deep (Type II). About 28% of the examined regions showed significant concavities of more than 3 mm (Type III). The obtained distribution as a function of the depth did not reveal any dependence on age and gender of patients examined by this study (P > .05). Mandibles with any lingual concavity pose a potential increased risk of lingual cortical perforation during surgery, particularly endosseous implant placement. Cross-sectional imaging provides excellent delineation of mandibular anatomy and important information on the depth of the submandibular gland fossa in the preoperative assessment of the posterior mandible for dental implant fixture placement and other surgical procedures.


PMID: 20123366

DOI: 10.1016/j.tripleo.2009.08.035

Other references

Behrendt, K., 1968: Das Abwandern parasitierter Aphiden von ihren Wirtspflanzen und eine Methode zu ihrer Erfassung. Beitraege zur Entomologie, 18: 293-298

Hwang, J.S.m; Lee,; Kang, H.A.; Lee,; Sohn,, 1997: Genetic relationships among the parental Bombyx mori strains of the current F1 hybrid silkworm based on RAPD. The genetic relationships among the twenty parental silkworm, Bombyx mori strains authorized in Korea were evaluated using RAPDs-PCR(Random Amplified Polymorphic DNAs-Polymerase Chain Reaction). Twenty-six different 10-mer oligonucleotide primers...

Lund, H.R., 1978: North Dakota State University - Agriculture 1978. The 1977 research programme of the North Dakota State University of Agriculture and Applied Science's Agricultural Experiment Station is summarized and selected major research projects are outlined.

Anonymous, 1978: The law on wine is a stable guarantee for high quality and naturalness of Bulgarian wines. Lozarstvo i vinarstvo: 23 (6) 1-2

Anonymous, 2000: Clofazimine: new products. Major antileprous drug. (1) Clinical trials have shown that clofazimine monotherapy is effective. To avoid the emergence of resistance, however, the WHO reference treatment since 1982 has been the rifampicin + dapsone + clofazimine combination. (2) Epidemiological studie...

Morris, P., 1986: Regulation of product synthesis in cell cultures of catharanthus roseus iii. alkaloid metabolism in cultured leaf tissue and primary callus. Cultured leaf discs of Catharanthus roseus produced visible callus under a variety of cultural conditions within 10 to 15 days. A peak of respiratory activity typical of rapidly growing callus was observed after 10-20 days culture. Photosynthesis...

Masten, J.K.ndoole, B., 2000: The transfer of small business assistance strategies to emerging countries: the case of Malawi. Journal of technology transfer 25(3): 289-298

Thomason, I.J.; Van Gundy, S.D., 1962: Comparison of motility and gall production as measures of viability of Meloidogyne javanica larvae. Viability of root-knot larvae stored in water for one, 2, 4, 8 or 16 days at 3 degrees , 15 degrees or 27 degrees C. was tested by a motility test (passage through a filter) and by the numbers of galls produced on tomato. Both methods showed survi...

Tonnis, W., 1956: Indication and technic of hemispherectomy. Zentralblatt für Chirurgie 81(33a): 1489-1490

Redfield, R.J.; Campbell, A.M., 1984: Origin of cryptic lambda prophages in Escherichia coli K-12. Cold Spring Harbor Symposia on Quantitative Biology 49: 199-206