DENTOGINGIVAL UNITBy- Dr Rohit Rai Content • Junctional epithelium • Gingival fiber • Clinical importance of dentogingival unit. Shift of the dento gingival junction The dentogingival junction is an anatomical and functional interface between the gingiva and the tooth. PDF | This study define altered passive eruption (APE) and evaluate the morphology of the dentogingival unit. individuals subjected to.

Author: Grogul Megrel
Country: Namibia
Language: English (Spanish)
Genre: Literature
Published (Last): 2 August 2009
Pages: 122
PDF File Size: 20.7 Mb
ePub File Size: 10.41 Mb
ISBN: 556-1-79580-513-7
Downloads: 28578
Price: Free* [*Free Regsitration Required]
Uploader: Akinogor

It therefore seems inappropriate to use the term APE to indicate this anatomical situation when mechanisms as difficult to study as tooth eruption appear to be involved. A descriptive statistical analysis was first made of the clinical and radiological variables for all the subjects included in the study. Dentogjngival literature lacks references for calibrating the magnitude of gingival overlap characterizing APE.

The dimensions of the human dentogingival junction. XCP Paralleling System instruments in position, and correct position of all components is verified Click here to view. In a healthy state, the gingival margin is generally located on the enamel and the junctional epithelium from the base of the sulcus to the CEJ, and the gingival fiber apparatus takes place between the osseous crest and the CEJ.

This approach will enable the clinician to evaluate the situation dentpgingival to adopt the appropriate method of treatment, limited to gingival and mucogingival procedures or extended to osseous surgical procedures Figs to A more precise classification, based on histologic findings of clinical situations in the adult exhibiting deviations from this normality, has been proposed.

Despite the clinical relevance of the determination of the length and width of the DGU, there is no standardized technique.

7. Esthetic Management of the Dentogingival Unit

The keratinized gingival width was measured on each tooth. The mucogingival junction is located coronal or at the level of the alveolar crest. At the dentogingival junction DGUthe presence of APE is associated to a thick bone crest and connective tissue attachment, with a long biological space. This vertical motion causes the gums to displace along with the crown.


The blue line reflects the proportion of cases not presenting APE for an overlap less than or equal to that indicated on the abscissas axis.

Int J Periodontics Restorative Dent. Related articles Dentogingival unit gingival thickness radiographs.

Morphology and dimensions of the dentogingival unit in the altered passive eruption

Int J Periodont Rest Dent ; No significant differences were observed between the presence of tooth 21 with APE and the clinical variables age and sex, Angle molar and canine occlusion class, lip-nose distance and probe depth. PPRx was a highly reproducible exploratory technique. Int Dent J ; This article has been cited by other articles in PMC. This variation in habitual morphology involving a more coronal periodontium has been referred to as altered passive eruption APE or delayed passive eruption 6.

The location of the bottom of the gingival attachment at the cementoenamel junction CEJ is considered by many a transitional stage. Table 2 presents the average dimensions for each variable examined in the PPRx study. How to cite this article: This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

No significant correlation was recorded between teeth 21 with and without APE in: These results suggest that the dimensions of DGU are highly variable in humans. Many adults exhibit short anatomic crowns with gingival tissue located occlusally or incisally. Statistical analysis confirms the presence of two morphological patterns of APE, respectively characterized by a longer and shorter distance from cementoenamel junction to bone crest.

Upper lip height was measured as the distance from the base of the nose to the lower margin of the lip, with an evaluation of the amount of gingival tissue exposed over the four upper incisors on smiling.

Fig Clinical situation following minimal tooth lengthening by means of forced eruption with fiber resection. Gingival phenotypes in young male adults. We conclude that the dimensions of the DGU in humans can be measured with the PPRx technique, and this technique offers a simple, concise, noninvasive, inexpensive, and reproducible method that can be used in the clinical setup to measure both the length and thickness of the DGU with accuracy.


A first analysis was made of the correlation between the clinical diagnosis of tooth teeth 21 i.

7. Esthetic Management of the Dentogingival Unit | Pocket Dentistry

In turn, the variable overlap refers to the percentage anatomical crown covered by the gingival Fig. Ultrasonic determination of gingival thickness. Esthetic Management of the Dentogingival Unit. Measurement of thickness of connective tissue attachment and free gingival thickness Click here to view. Therefore, in our series of teeth, attrition was scantly relevant to crown length.

Mean dentogingival measurements on the labial surface of right maxillary central incisor were 1. Fig Passive eruption describes the apical shift of the gingival attachment along the root surface. In our series the mean distance was found to be 1. It describes the dimensions and relations of the different elements of the dentogingival unit.

Morphology and dimensions of the dentogingival unit in the altered passive eruption

The alveolar crest is situated at the level of the cementoenamel junction and the mucogingival junction apical to the alveolar crest. Subject variation and influence of tooth type and clinical features.

National Center for Biotechnology InformationU. In a study that involved measurements taken from clinically normal specimens, it has been established 8 that there is some form of proportional dimensional relationship among the crest of the alveolar bone, the connective tissue attachment, and the junctional epithelium, as well as a repetitive consistency in these proportions. Journal of Conservative Dentistry. The same examiner F.

Unfortunately, proper intrasulcular margin placement is often impossible because of the deep location of caries and previous overzealous tooth preparations.

The purpose of this division was to dentogingivl the variables related to APE and the particularities that may help differentiate the condition. Although width can also be assessed by transgingival probing or with an ultrasound device, they are either invasive or expensive Aims: Clinical diagnostic criteria of altered passive eruption APE.

Related Posts