Maxillary Posterior Bone Height in Relation to Maxillary Sinus Floor in Indian Dentulous Population

Abstract

To establish a ratio of variable bone height (Infrazygomatic alveolar crest height) to constant bone height (Infraorbital zygomatic height) and, to estimate the relative sinus floor position from alveolar crest of maxillary first molar region of dentulous Indian males and females, using Digital panoramic radiographs. Panoramic radiographs of 74 patients were included in the study (37 male, 37 female) to measure maxillary posterior vertical bone height and their ratio in dentulous patients. Measurements were made from reference lines drawn from anatomic landmarks on soft digital versions of standardized panoramic radiographs using Kodak dental imaging software. Later the data were analyzed using normal test (Z-score). When the posterior maxillary bone height and their ratio were evaluated in Indian population, the vertical bone height (x, y, z) of males was more than the females. Ratio of Infrazygomatic-alveolar crest distance (y)/Infraorbital-zygomatic distance (x)-was 0.74 for Indian males and females. The relative sinus floor for Indian males was found to be 8.1 mm and that of Indian females to be 7.8 mm. The results are of significant value as "baseline" data, in serial studies where alveolar bone height for a single patient is compared at different times before and after tooth loss. The relative sinus floor position from alveolar crest can help in implant length selection. This study can be used as a diagnostic and predictive tool in implant treatment planning but further long-term evaluation is still required to prove the efficacy of this study.

Position of posterior superior alveolar artery in relation to the maxillary sinus using cone beam computed tomography in Indian sub-population

“…Also, the difference of the first two measurements (mean distance between the lower border of the artery and the alveolar crest À mean bone height from the sinus floor to the ridge crest) would help in risk assessment with respect to the location of the artery. However, smaller values have been reported in literature [28]. -The mean distance from the artery to the medial sinus wall was 12.99 ± 3.65 mm in this study.…”

Use of Panoramic Radiographs for Evaluation of Maxillary and Mandibular Residual Ridge Resorption: In Vitro Study

“…According to Packota et al, 6 ratio x/y of height is 1.2 in Canadian population which means that infra-zygomaticalvealor crest distance is 83% of Infra-orbital-zygomatic distance and ratio of X/Z is 0.9. This present study is shows a ratio slightly higher than in the study done by Chowdhary et al 8 , even though both were done in the Indian population for the maxillary ridge. The reason can be due to patients in this study had larger maxillae with no bone resorption.…”

“…The study by Chowdhary et al, 8 shows that posterior maxillary vertical bone height of Indian dentulous males is more than Indian dentulous females. But according to Saglam et al, 9 height of maxillae was not significantly different between men and women in dentulous patients of Turkish population.…”

Synthesis and characterization of bis(O,O′-diisopropylmonothiophosphato)nickel(II) adducts and molecular structures of bis(pyridine)bis(O,O′-diisopropylmonothiophosphato)nickel(II) complex

“…A bridging monothiophosphate moiety was found in [(Me 2 Sn{O(S)P(OEt) 2 } 2 O] 2 [17] and [(Ph 2 Sn(l-OH){O-(S)P(OPh) 2 } 2 ] 2 [10]. The monodentate coordination through sulfur was found in As{O(S)P(OR)} 3 (R = Me, Et, i Pr) [20,21] and mixed ligand complexes [OCMe 2 CMe 2 OAsO(S)-P(OR) 2 ] (R = n Pr, i Pr, Ph) [22] and Sb(S 2 CX 2 ) 2 [25], insecticidal [26], and pesticidal properties [27] and have been used in heavy metal extraction [28] from water and biological systems.…”