TY  - JOUR
T1  - Odontogenic Keratocysts: A 10 year Retrospective Review of 209 Cases for Recurrence and
Related Factors in an Iranian Population
AU - Kheirandish, Seddigheh AU - Hosseini Todashki, Hassan AU - Eshghyar, Nosratollah AU - Taghavi Damghani, Farnoush AU - Kheirandish, Ali 
JO  - Journal of Dentistry Concerns
VL  - 1
IS  - 2
SP  - 5
EP  - 12
PY  - 2020
DA  - 2001/08/19
SN  - 2706-7467
DO  - jdc.2020.5.12
UR  - https://makhillpublications.co/view-article.php?doi=jdc.2020.5.12
KW  - Odontogenic Keratocysts (OKC)
KW  -recurrence
KW  -surgery
KW  -cox
KW  -age
AB  - The Odontogenic Keratocysts (OKC) are
epithelial developmental cysts of the jaws with a higher
frequency of recurrences due to the incomplete removal
of the cyst, difficulty in access to the lesion locations or
eruption of the new cyst in the place. The objective of the
present study was to determine the frequency of OKC
post-operative recurrences and the possible affective
factors in patients referred to Dr. Shariati Hospital and
Tehran Dental School during 1996-2006. In this
retrospective descriptive study, 209 patients (61.2%
males, 38.8% females) were selected by census sampling
and assessed. Different characteristics of the OKC lesions
were obtained from the patient’s records or calling them.
The effect of possible variables on the incidence of
recurrence was statistically analyzed by Cox regression
and the survival rate of the patients was determined by
Kaplan-Meier test. The mean age of OKC involvement
was 34.5 years and the most frequencies were observed in
the third (62, 29.7%), fifth (40, 19.1%) and second (32,
15.3%) decades of the life. The most frequent OKC
locations were mandibular (136, 65%), mandibular
posterior (98, 46.9%), maxillary posterior (28, 13.4%)
and maxillary anterios (12, 5.7%). Enucleation (202,
96.7%), curettage (76, 36.4%) and peripheral ostectomy
(75, 35.9%) were the mostly used surgery techniques.
Of the total patients, 37 individuals (17.7%) showed
OKC recurrences after initial surgery, of which
14 cases (37.8%) occurred in the mandibular posterior
and 6 cases (16.2%) in the maxillary posterior. Most cases
had recurrences 12 months after the initial surgery
(13, 35.1%). Aggressive curettage was statistically
associated with the decreased recurrences while the
gender, age, lesion location and other surgeries were not
statistically associated with the recurrence incidence.
The recurrence ratio of 17.7% among OKC patients
referred to Dr. Shariati Hospital during 1996-2006
was similar to the existing repost in the literature.
ER  -