Abstract
Resorption of alveolar bone is the best recognized feature of mandibular aging in the edentate subject. The other consequences of the loss of teeth in the elderly are less well known. An anthropometric study of the mandible by antero-posterior and lateral radiographs of subjects older than 70 years both dentate and edentate but without any maxillo-mandibular dysmorphosis has been done to demonstrate the differences, which exist between the dentate and edentate mandible. The edentate mandibles showed a diminution in the height of the symphysis and increase in the height of the mandibular incisure. A diminution in the height of the body and an increase in the gonial angle in the significant manner. No significant difference was seen for the height of the ramus and the length of the mandible, the minimum width of the ramus and the bigonial width. The diminution in the height of the mandibular symphysis and of the body is explained by the resorption of the alveoli part of the mandible. The increase in the mandibular angle and the diminution in the height of the mandibular incisure may be explained by disequilibrium between the elevator and depressor muscles of the mandible, as a function of the elevator muscles or by the absence of the molar buttress.
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References
Bairam LR, Miller WA (1994) Mandible bone resorption as determined from panoramic radiographs in edentulous male individuals aged 25–80 years. Gerodontology 11:80–85
Demoulin F (1986) Techniques anthropologiques. In: Ferembach D, Susanne C, Chamla MC (eds) L’homme son évolution sa diversité. Manuel d’anthropologie physique. du CNRS, Paris, pp 17–41
Doual JM, Ferri J, Laude M (1997) The influence of senescence on craniofacial and cervical morphology in humans. Surg Radiol Anat 19:175–183
Enlow DH (1975) Handbook of facial growth. W.B. Saunders, Philadelphia, pp 431–437
Enlow DH, Bianco HJ, Eklund S (1976) The remodeling of the edentulous mandible. J Prosthet Dent 36:685–693
Hirai T, Ishijima T, Hashikawa Y, Yajima T (1993) Osteoporosis and reduction of residual ridge in edentulous patients. J Prosthet Dent 69:49–56
Hongchen L, Jilin Z, Ning L (1992) Edentulous position of the temporomandibular joint. J Prosthet Dent 67:401–404
Israël H (1973) The failure of aging or loss of teeth to drastically alter mandibular angle morphology. J Dent Res 52:83–90
Laude M (1993) In: Stricker M, Raphaël B (eds) Croissance crânio-faciale normale et pathologique. Morphos, Reims, p 78
Laude M, Doual JM, Doual-Bisser A (1985) Modifications morphologiques du squelette cervico-céphalique en fonction de l’age. Etude radio-céphalométrique. Bull Group int Rech sc Stomat et Odont 28:27–45
Mercier J (2000) L’analyse architecturale cranio-faciale de Delaire. Rappel sur les modifications apportées par son concepteur en 1994. Rev Stomat et Chir Maxillo-Faciale 101:12–16
Ohm E, Silness J (1999) Size of the mandibular jaw angle related to age, tooth retention and gender. J Oral Rehab 26:883–891
Raustia AM, Salonen MAM (1997) Gonial angles and condylar and ramus height of the mandible in complete denture wearers—a—panoramic radiograph study. J Oral Rehab 24:512–516
Soikkonen K, Ainamo A, Xie Q (1996) Height of the residual ridge and radiographic appearance of bony structure in the jaws of clinically edentulous elderly people. J J Oral Rehab 23:470–475
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Merrot, O., Vacher, C., Merrot, S. et al. Changes in the edentate mandible in the elderly. Surg Radiol Anat 27, 265–270 (2005). https://doi.org/10.1007/s00276-005-0323-x
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DOI: https://doi.org/10.1007/s00276-005-0323-x