000000807 001__ 807 000000807 005__ 20260422152810.0 000000807 0247_ $$2DOI$$a10.6083/M4B85659 000000807 037__ $$aETD 000000807 245__ $$aRetrospective evaluation of a modified bonded lingual retainer for the maxillary incisors 000000807 260__ $$bOregon Health and Science University 000000807 269__ $$a2007 000000807 336__ $$aThesis 000000807 502__ $$bM.S. 000000807 502__ $$gOrthodontics 000000807 520__ $$aTooth relapse following orthodontic treatment remains difficult to predict and prevent. This study compared the effectiveness of an upper Hawley retainer and a fixed maxillary lingual retainer in maintaining anterior tooth alignment and evaluated associated periodontal outcomes. A retrospective chart review identified 50 subjects with comparable initial irregularity and retention duration. Post‑treatment models, photographs, and periodontal measurements were analyzed. Fixed retainers demonstrated significantly less relapse than Hawley retainers. Although greater bleeding on probing was observed in the bonded group, no differences were found in probing depths, recession, or periodontal disease indicators. Fixed maxillary retainers appear effective for long‑term incisor alignment without compromising periodontal health. 000000807 540__ $$fCC BY 000000807 542__ $$fIn copyright - single owner 000000807 650__ $$aPeriodontal Diseases$$023822 000000807 650__ $$aMaxilla$$021885 000000807 650__ $$aOrthodontic Retainers$$031026 000000807 650__ $$aOrthodontics, Preventive$$023311 000000807 691__ $$aSchool of Dentistry$$041368 000000807 692__ $$aDepartment of Orthodontics$$041435 000000807 7001_ $$aMasaki, Katherine$$uOregon Health and Science University$$041354 000000807 8564_ $$9e4c890ae-20c9-442d-a16e-859c813a793f$$s689137$$uhttps://digitalcollections.ohsu.edu/record/807/files/810_etd.pdf$$ePublic$$2d71d278ecd70e5af32a389814961e2cb$$31 000000807 901__ $$a<p>These documents are archival records. They are retained for historical reference only. </p><p><b>Need an accessible version? Use the ‘Get Accessible Copy’ link above.</b></p> 000000807 905__ $$a/rest/prod/z0/29/p4/77/z029p4779 000000807 909CO $$ooai:digitalcollections.ohsu.edu:807$$pstudent-work 000000807 956__ $$aGet Accessible Copy$$uhttps://ohsu.libwizard.com/f/requestaccessibledocument 000000807 980__ $$aTheses and Dissertations