Ridge preservation techniques
mercredi 11 avril 2018
Study evaluates various ridge preservation techniques
Researchers from German and Swiss universities have conducted a randomised, clinical study to evaluate the effectiveness of various ridge preservation techniques.
Changes to morphology following tooth extraction have been well documented. One such study evaluated 46 extraction sites and reported 50% shrinkage in the bucco-lingual ridge after one year. As a result of this, several techniques for ridge preservation have been suggested, many of which include the use of deproteinised bovine bone mineral (DBBM).
This study evaluated the extent of buccal ridge changes between four different treatment approaches. The different methods included three preservation techniques: the placement of DBBM on its own; DBBM covered with a soft tissue punch from the palate; and DBBM covered with a resorbable collagen membrane. Lastly, there was a control group which received no additional treatment.
40 patients with hopeless teeth were chosen for the study. After the hopeless teeth were extracted, patients were randomly assigned to one of the four treatments. Master casts were made pre-extraction, and again after six months. These were then scanned using an optical scanner to compare the changes to the buccal ridge.
The results showed no statistical significance between the four treatment methods. Nevertheless, the researchers observed that the control group, which received no treatment, displayed twice as much contour loss as the preservation technique groups. The three preservation techniques resulted in a similar buccal contour changes, with the ‘soft tissue punch’ group showing smallest amount of change.
This study was presented as an e-poster at the 2017 EAO Congress.