z-logo
Premium
Periodontal attachment loss assessed by linear and area measurements in vitro
Author(s) -
Ktock Kristin Solveig,
Gjerdet Nils Roar,
Haugejorden Ola
Publication year - 1993
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/j.1600-051x.1993.tb00386.x
Subject(s) - dentistry , in vitro , clinical attachment loss , periodontal disease , medicine , chemistry , biochemistry
The aim of the present study was to investigate the relationship between linear and area measurements of periodontal attachment loss, and to determine the root surface area on different tooth‐types. Extracted permanent teeth were collected in a national survey including a systematic random sample of 500 Norwegian dentists. The response rate was 70%. Altogether 329 teeth were received, 81 of them (excluding 3rd molars) were subjected to both linear and area measurements of attachment loss. Using a dissecting microscope (10 ×), 4 to 8 duplicate linear measurements were recorded per tooth. The areas of both lost and remaining periodontal attachment were measured by a method based on controlled release of Cu and Co metal ions from coatings applied to the root surface. Linear loss of attachment for single‐rooted teeth ( n =63) was x̄=44.0% and the area loss x̄=49.2%. The corresponding measurements for multi‐rooted teeth ( n =18) were x̄=30.3% and x̄=35.1%, respectively. The correlation between linear and area loss was r =0.78 for single‐rooted and r =0.75 for multi‐rooted teeth ( p <0.01). The lower correlation in multi‐rooted teeth is probably due to the more complex root anatomy. It is concluded that there is a strong correlation between linear loss of attachment and area of periodontal support lost for teeth with early to moderate loss of attachment, and that linear measurements tend to underestimate the remaining periodontal attachment.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here