Residual ridge atrophy in complete denture wearers and relationship with densitometric values of a cervical spine: a hierarchical regression analysis

Abstract

Residual ridge atrophy in complete denture wearers and relationship with densitometric values of a cervical spine: a hierarchical regression analysis Background: The rate of residual ridge atrophy (RRR) and its association with mineral density of other bones have not yet been fully explained. Objective: To measure RRR over a 5-year period in complete denture wearers and relate it to the density of a cervical spine (CSBD). Materials and methods: Sixty-two patients (different gender, age, body mass index, duration of edentulousness (DE) and different denture-wearing habits) participated. A copper stepwedge was attached to the cassette, and 50 lateral radiograms met the criteria to be included. Results: A significant decrease in vertical height was observed in all measured sites. The amount of RRR was highest in frontal areas of both jaws and decreased gradually towards lateral regions. Hierarchical regression analysis revealed that the amount of RRR in the maxillary frontal area could be explained up to 48.4% by the variable DE and only up to 6.1% by the CSBD, while gender had almost no influence (1%). Similar results were obtained for the lateral maxillary RRR (33.9%; 7%; 2%), frontal mandibular RRR (40; 8.4; 0.4%) and lateral mandibular RRR (31.5%; 3.4%; 7.7%). Conclusion: Skeletal bone density, reflecting systemic and hereditary factors, is weakly related to RRR (3.4-8.4%).

Morphometric analysis of sinus depth in the posterior maxilla and proposal of a novel classification

“…Findings regarding the effect of gender on RRR and RH are scarce and discussed controversial in the literature. While some studies found significant differences in bone loss between genders others were not able to confirm these findings202122.…”

Association of complete denture wearing with the rate of reduction of mandibular residual ridge using digital panoramic radiography

“…Residual ridge resorption (RRR) is a continuous process of alveolar bone loss, which is greater during the first few months after the tooth extraction than later (Kovacic et al 2012). The rate of resorption is twice more pronounced in the mandible than in the maxilla Tallgren 2003.…”

A test of a skeletal ageing method based on resorption of the alveolar crest following tooth loss using a skeletal population of documented age at death

“…Following loss of a tooth, the alveolar bone undergoes localized resorption, with consequent loss of alveolar bone height. Studies of modern populations suggest that resorption of alveolar bone following tooth loss may be life‐long, is normally irreversible, and the height of the alveolar bone bears an inverse relationship to time since tooth loss (Tallgren, ; Parkinson, ; Tuncay, Thompson, Abadi, & Ellinger, ; Kalk & de Baat, ; Ortman, Hansman, & Dunford, ; de Baat et al, 1993; Douglass, Meader, Kaplan, & Ellinger, ; Karaagaçioglu & Ozcan, ; Närhi, Ettinger, & Lam, ; Knezović‐ Zlaterić, Čebelić, Kovačić, & Mikelić‐Vitasović, ; Divaris, Ntounis, Marinis, Polyzois, & Polychronopoulou, 2012; Kovačić, Knezović‐ Zlaterić, & Čebelić, ; Singhal et al, ). This may result in an inverse relationship between alveolar bone height and age at a population level among those showing tooth loss, as has been reported in radiographic studies of living subjects (Dyer & Ball, ; Humphries, Devlin, & Worthington, ; Hirai, Ishijima, Hashikawa, & Yajima, ).).…”

“…Kordatzis, Wright, & Meijer, ; Divaris et al, ; Mays, ). It is possible that this is associated with the generally greater age‐related decline in bone mass in females: although the link is controversial (Springe, Slaidina, Soboleva, & Lejnieka, ), some modern biomedical studies have demonstrated, in women, an association between greater alveolar resorption following loss of dentition and low bone mass at diverse skeletal sites (Rosenquist, Baylink, & Berger, ; Hirai et al, ; Klemetti & Vainio, ; Kovačić et al, ). In females, calcium homeostasis is significantly altered during pregnancy and lactation (Salari & Abdollahi, ), and the physiological changes of pregancy are associated with alterations in the periodontal tissues (Russell, Gordon, Lukacs, & Kaste, ).…”