title: On the relationship between gingival morphotypes and different crown shape assessments in young Caucasians.
abstract: OBJECTIVE
  The objective of this study was to determine the relationship between crown length as well as crown width and gingival morphotypes (primary aim) and their correlation with tooth shape and papilla height (secondary aim).
  
  
  METHODS
  Thirty-six adult subjects were evaluated in this clinical study according to their gingival morphotype (GM) defined by transparency of a periodontal probe through the buccal gingival margin. Eighteen subjects comprised the thin entity group and 18 the control group thick entity, respectively. Besides crown length (CL) and crown width (CW), two different methods to assess crown shape (CW/CL ratio) were compared and analysis of their relation to papilla height was performed.
  
  
  RESULTS
  Nineteen female and 17 male volunteers were enrolled in this study, with a mean age of 24.9 years (±3.4; minimum 18, maximum 35). A statistical significant difference for the crown length could be detected between both groups (p < 0.05) but not for crown width. No significant difference was found for apical or coronal CW/CL ratio besides on tooth 22.
  
  
  CONCLUSIONS
  Within the limitations of this study and within this young Caucasian study population, only crown length seems to have an association with different gingival morphotypes. Furthermore, papilla height and crown shape do not have a clear correlation on tooth level.
  
  
  CONCLUSIONS
  Crown shape seems to be not a strong parameter in assessing the gingival morphotype.
authors.affiliation: Department of Periodontology, Faculty of Health, Witten/Herdecke University, Alfred-Herrhausen-Straße 45, 58455, Witten, Germany. kai.fischer@uni-wh.de.|Department of Periodontology, Julius-Maximilians-University, Wuerzburg, Germany. kai.fischer@uni-wh.de.
authors.forename: Kai R
authors.initials: KR
authors.lastname: Fischer
authors.affiliation: Department of Periodontology, Julius-Maximilians-University, Wuerzburg, Germany.
authors.forename: Timo
authors.initials: T
authors.lastname: Richter
authors.affiliation: Department of Periodontology, Faculty of Health, Witten/Herdecke University, Alfred-Herrhausen-Straße 45, 58455, Witten, Germany.
authors.forename: Anton
authors.initials: A
authors.lastname: Friedmann
authors.affiliation: Department of Periodontology, Julius-Maximilians-University, Wuerzburg, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Fickl
mesh_terms: D005260:Female; D005881:Gingiva / Q000033:anatomy & histology*; D006801:Humans; D008297:Male; D009811:Odontometry / Q000379:methods*; D019228:Tooth Crown / Q000033:anatomy & histology*; D044465:White People; D055815:Young Adult
keywords: Crown shape; Gingival morphotype; Papilla height; Probe transparency