{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T01:10:37Z","timestamp":1792458637743,"version":"4.5.0"},"reference-count":28,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2014,5,1]],"date-time":"2014-05-01T00:00:00Z","timestamp":1398902400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Periodontology"],"published-print":{"date-parts":[[2014,5]]},"abstract":"<jats:p><jats:bold>Background:<\/jats:bold> The aim of the present study is to examine the sinus lateral wall thickness (LWT) of atrophic posterior maxilla (&lt;10 mm) of patients with complete and partial edentulism and determine the influence of residual ridge height (RH), sex, and age on maxillary LWT.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> Four hundred fourteen measures were taken from 140 consecutive patients that met the inclusion criteria. On the selected sagittal section, a built\u2010in digital caliper recorded in millimeters the RH and LWT (a perpendicular line at 3, 5, 7, 10, 13, and 15 mm from the lowest point of the sinus floor). Edentulous spans were further classified as complete edentulous atrophic maxilla (CEM) and partial edentulous atrophic maxilla (PEM). The mixed linear model was used to test the effects of sex, type of edentulism, edentulous span, and RH on the measurement of the LWT of the sinus.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> Mean LWT for PEM was 1.71 \u00b1 0.12 mm, and for CEM, 1.57 \u00b1 0.07 mm (<jats:italic>P<\/jats:italic> = 0.01). The mixed model yielded significant effect of edentulous span (<jats:italic>P<\/jats:italic> = 0.048) and interactions among type of edentulism and edentulous span (<jats:italic>P<\/jats:italic> &lt;0.001) and edentulous span by RH (<jats:italic>P<\/jats:italic> &lt;0.01). Age and RH were positively associated with LWT; however, they did not interact with RH, sex, or type of edentulism. RH has been shown to correlate with edentulous span (<jats:italic>P<\/jats:italic> &lt;0.001) and type of edentulism (<jats:italic>P<\/jats:italic> = 0.01). The longer the edentulous span, the thinner the LWT. Similarly, RH was larger for PEM (6.85 \u00b1 0.34 mm) than CEM (5.69 \u00b1 0.26 mm).<\/jats:p><jats:p><jats:bold>Conclusions:<\/jats:bold> The maxillary sinus lateral wall tends to increase in thickness from the second premolar to the second molar and from 5 mm up to 15 mm. In addition, RH, presence of teeth adjacent to the edentulous atrophic ridge, and age were shown to influence maxillary sinus LWT.<\/jats:p>","DOI":"10.1902\/jop.2013.130392","type":"journal-article","created":{"date-parts":[[2013,12,5]],"date-time":"2013-12-05T08:59:30Z","timestamp":1386233970000},"page":"676-682","source":"Crossref","is-referenced-by-count":46,"title":["Maxillary Sinus Lateral Wall Thickness and Morphologic Patterns in the Atrophic Posterior 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