title: Effect of placing intentionally high restorations: Randomized clinical trial.
abstract: OBJECTIVE
  The aim of this study was to examine the behavior of posterior teeth restored with single-tooth restorations with intentionally high occlusal contacts.
  
  
  METHODS
  Consent was obtained from 17 patients who were seen a total of 5 times over 3.5 years. The restorations placed were all full occlusal coverage gold restorations. Tooth mobility was recorded using the Periotest device and tooth movement was determined from impressions and 3D imaging. Patients were randomly assigned into two groups, the control group which received restorations with no intentional increase of the occlusal vertical dimension; or the treatment group where they received intentionally high restorations in 0.5mm supraocclusion.
  
  
  RESULTS
  Statistical analysis showed no significant difference in mobility between visits for both the control and the treatment groups while a significant dependency and difference in tooth movement was observed between the subjects of the two groups. Most patients from the treatment group reported discomfort but no pain for the first 7-10 days after the restoration was fitted, which subsided over a period of couple of weeks. At review, 3 years later, no mobility or additional movement was observed.
  
  
  CONCLUSIONS
  Cementation of an intentionally high single-tooth restoration causes no increase in tooth mobility while occlusal adaptation re-establishes and restores the occlusal plane.
authors.affiliation: Restorative Dentistry, King's College London Dental Institute, London, United Kingdom.
authors.forename: Olga
authors.initials: O
authors.lastname: Gerasimidou
authors.affiliation: Biomaterials & Restorative Dentistry, King's College London Dental Institute, London, United Kingdom.
authors.forename: Timothy
authors.initials: T
authors.lastname: Watson
authors.affiliation: Primary Dental Care, King's College London Dental Institute, London, United Kingdom. Electronic address: brian.millar@kcl.ac.uk.
authors.forename: Brian
authors.initials: B
authors.lastname: Millar
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003766:Dental Occlusion; D003793:Dental Restoration, Permanent; D005260:Female; D005440:Fluid Therapy; D006047:Gold Alloys; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D052280:Orthodontic Anchorage Procedures; D011476:Prosthodontics / Q000379:methods; D014086:Tooth Mobility / Q000000981:diagnostic imaging / Q000534:rehabilitation*; D014087:Tooth Movement Techniques / Q000379:methods; D057085:Tooth Wear / Q000534:rehabilitation; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D006047:Gold Alloys
keywords: Clinical outcomes; Occlusion; Oral rehabilitation; Orthodontic tooth movement; Prosthetic dentistry/prosthodontics; Remodeling