Unit:
Κατεύθυνση Προσθετική (Κλινικές Ειδικεύσεις)Βιβλιοθήκη Οδοντιατρικής
Author:
Ανδρικοπούλου Ευσταθία
Supervisors info:
Δουκουδάκης Αστέριος, Καθηγητής, Διευθυντής Εργαστηρίου Προσθετικής, Τσιχλάκης Κωνσταντίνος,Καθηγητής, Διευθυντής Κλινικής Διαγνωστικής και Ακτινολογίας Στόματος, Κούρτης Στέφανος, Αναπληρωτής Καθηγητής Προσθετικής
Original Title:
Μελέτη της οστικής μεταβολής σε εμφυτεύματα μετά από άμεση και μεθύστερη φόρτιση με τη χρήση ψηφιακής αφαιρετικής ακτινογραφίας
Translated title:
Assessment of bone changes in immediate and delayed loaded dental implants by subtracted panoramic radiographs
Summary:
PURPOSE
The purpose of the present study was to detect bone density around immediate
and delayed loaded dental implants using subtraction images. Quantitative bone
changes were assessed by independent observers using panoramic radiographs.
Qualitative bone changes were evaluated by subtraction imaging radiographs
according to the Emago System.
MATERIAL AND METHODS
Eleven patients from the Dental School of the University of Athens who
participated in the Ankylos research protocol were included in the study. The
aim of the program was to clinically evaluate the Ankylos dental implant system
and the telescopic abutment Syncone in patients with edentulous mandible and
implant retained mandibular overdenture with immediate loading. Four Ankylos
dental implants with 3,5mm diameter and 9-13mm length were placed in the
anterior part of the mandible. Four patients were males and 7 females. Four
patients were smokers and 7 non-smokers while 7 received immediate and 4
delayed loaded implants. Panoramic radiographs were performed immediately after
implant placement (T1) and after 6 months (T2) and 3 years (T3).
Eleven were not radiographically assessed due to distortion of the image. The
methods used for the assessment of the measurements included the estimaton of
the bone density with the Emago system based on the abovementioned techniques
(Method A and Method B) and the observation by the dental practitioners.
RESULTS - CONCLUSIONS
1. No significant difference in bone resorption around the cervical part
of the implant was noted between immediate and delayed loading according to the
clinical observation of the 5 dental independent practitioners in three
consecutive recalls
2. The clinical observation of the panoramic radiographs exhibited high
degree of reliability among observers (Intra Class Correlation)
3. The Emago system can provide accurate measurements for grey value
calculations around implants in panoramic radiographs
4. No significant differences in grey value measurements were noted
around immediate and delayed loaded dental implants with Method A and B
Keywords:
Immediate loading, Delayed loading, Subtracted radiographs
