Smile Line and Periodontium Visibility

Liébart, Marie-Françoise; Fouque-Deruelle, Caroline; Santini, Alain; Dillier, François-Laurent; Monnet-Corti, Virginie; Glise, Jean-Marc; Borghetti, Alain
January 2004
Periodontal Practice Today;2004, Vol. 1 Issue 1, p17
Academic Journal
This multi-center study evaluated periodontium visibility during natural and forced smile based on a new classification. The study population consisted of 576 patients (364 women and 212 men) aged from 21 to 78 years. All the participants teeth from first right premolar to first left premolar were present and the periodontium was healthy. Clinical photographs of the participants smiles were taken and the smile line analyzed according to the following 4 classifications: 1) more than 2 mm of marginal gingiva visible or more than 2 mm apical to the cemento-enamel junction visible for the reduced but healthy periodontium; 2) between 0 and 2 mm of marginal gingiva visible or between 0 and 2 mm apical to the cemento-enamel junction visible for the reduced but healthy periodontium; 3) only gingival embrasures visible; and 4) gingival embrasures and cemento-enamel junction not visible. Patients were also classified by age group and gender. With natural smile analysis revealed the following: Class 1, 4.69%; Class 2, 8.16%; Class 3, 44.79%; and Class 4, 42.36%. With forced smile analysis revealed the following: Class 1, 22.22%; Class 2, 21.35%; Class 3, 45.49%; and Class 4, 10.94%. The eriodontium was more visible in the forced smile than in the natural smile. Age and gender influenced the position of the smile line for only the natural smile. Concern was expressed about esthetics by participants in 89.06% of the cases. Examination of periodontium visibility must be performed both for natural and forced smile.


Related Articles

  • An Explanation for the "Two Fiber Axes" Problem in Human Enamel by X-ray Diffraction. HIROTA, F. // Journal of Dental Research;Jul1986, Vol. 65 Issue 7, p978 

    Since Thewlis found the "two fiber axes" patterns on x-ray diffractograms of human enamel in 1934, many investigators have studied this problem. However, a definite answer has not yet been obtained. The present detailed x-ray diffraction study showed that the "two fiber axes" patterns in human...

  • Actual Damage to Teeth and Periodontal Tissues with Mesiodistal Enamel Reduction ("stripping"). ZACHRISSON, BJÖRN U. // World Journal of Orthodontics;Summer2004, Vol. 5 Issue 2, p178 

    The article examines whether or not there can occur some permanent damage to the teeth and periodontium with interproximal enamel reduction. It explains the principle of enamel removal with stripping, which is to recontour abnormally shaped teeth toward a more ideal morphology. Several different...

  • PRE-ALIGN THEN DESIGN. Qureshi, Tif // Guident;Nov2014, Vol. 7 Issue 12, p10 

    The article focuses on managing misaligned teeth and smile makeovers in aesthetic dentistry. Topics covered include smile makeovers with ceramic veneers, the use of rapid adult orthodontics and emax high strength pressed ceramics to align teeth without significant enamel loss and dealing with...

  • SURFACE CHANGES IN ENAMEL. BHUSSRY, B. R.; BIBBY, B. G. // Journal of Dental Research;Jun1957, Vol. 36 Issue 3, p409 

    The article reports on surface changes in enamel. A study was conducted using premolars with a known history from the Eastman Dental Dispensary and split into 7 groups according to their exposure time in the mouth. It was found that surface pigmentation in the teeth increased with age and that...

  • Crown dimensions and proximal enamel thickness of mandibular second bicuspids. Fernandes, Sérgio Augusto; Vellini-Ferreira, Flávio; Scavone-Junior, Helio; Ferreira, Rívea Inês // Brazilian Oral Research;Jul/Aug2011, Vol. 25 Issue 4, p324 

    To achieve proper recontouring of anterior and posterior teeth, to obtain optimal morphology during enamel stripping, it is important to be aware of dental anatomy. This study aimed at evaluating crown dimensions and proximal enamel thickness in a sample of 40 extracted sound, human, mandibular,...

  • Dens Evaginatus in Proximal Surface of Mandibular Premolar: A Rare Presentation. Viswanathan, Shanthi; Nagaraj, Vezhavendhan; Adimoulame, Sanguida; Kumar, Sathish; Khemaria, Gaurav // Case Reports in Dentistry;2012, p1 

    Dens evaginatus is a developmental anomaly that is characterized by occurrence of an extra cusp-like structure projecting from the crown portion of the tooth. Unusual extension of enamel has been found in posterior teeth as enamel pearl or as cervical enamel extensions from the cementoenamel...

  • PREVALENCE OF PALATO GINGIVAL GROOVE IN MAXILLARY LATERAL INCISORS. Iqbal, Naveed; Tirmazi, Sobia Masood; Majeed, Hanna Abdul; Munir, Muhammad Bader // Pakistan Oral & Dental Journal;Dec2011, Vol. 31 Issue 2, p424 

    Palato gingival grooves, also called palatoradicular grooves or radicular lingual grooves are developmental anomalies in which an infolding of the inner enamel epithelium and Hertwig's epithelial root sheath create a groove that passes from the cingulam and extend varying distances apically on...

  • BIOLOGIC WIDTH. Padbury, A.; Eber, R.; Wang, H. // Perio Reports Newsletter;Jul2003, Vol. 15 Issue 4, p6 

    Presents information on the results of a study that examined the relation between subgingival margin and biologic width. Background on biologic width; Relation of subgingival margins with plaque accumulation; Factors to consider regarding the margin of teeth restoration.

  • Enamel Subsurface Damage Due to Tooth Preparation with Diamonds. Xu, H. H. K.; Kelly, J. R.; Jahanmir, S.; Thompson, V. P.; Rekow, E. D. // Journal of Dental Research;Oct1997, Vol. 76 Issue 10, p1698 

    In clinical tooth preparation with diamond burs, sharp diamond particles indent and scratch the enamel, causing material removal. Such operations may produce subsurface damage in enamel. However, little information is available on the mechanisms and the extent of subsurface damage in enamel...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics