¹PRIVATE DENTAL OFFICE"DENTAŽ", BELGRADE
²DENTAL CLINIC, DEPARTMENT OF THE JAW ORTHOPEDICS, MILITARY MEDICAL ACADEMY, BELGRADE
³STATISTICS LABORATORY, FACULTY OF ORGANIZATIONAL SCIENCE, BELGRADE
⁴PERIODONTICS CLINIC, FACULTY OF DENTISTRY, PANCEVO

Introduction: Hypodontia is a condition where one to six teeth are missing during teeth development. Its etiology is unknown but it can be connected with congenital factor and abnormalities during initiation phase. The aims of this study were to analyse prevalence of hypodontiain ortodontically patients by orthopantomography radiology and the choice of therapy method in.patients with hypodontia by analysing medical documentation.
Methods: A ltogether 525 patients from one Dental Office in Belgrade,were included in this research. This epidemic retrospective study was conducted by analyzing orthopantomography radiologies  well as with collecting certain data from patients’ medical files. All data were classified according to age, gender, jaw, jaw side, missing tooth, class according to Angle and method of therapy.
Results:  The prevalence of hypodontia was 6.28% and it was more often registered in women population.  The most common therapy metods was closing space between the teeth (61%) and opening space in (33%). There was statistically significant correlation between treatment modality (opening and closing of the space) and tooth region with hypodontia (frontal and premolar) (p< 0.05). The occurrence of hypodontia was more obvious in lower jaw, lower second premolars were more often missing.
Conclusion: The prevalence of hypodontia was 6.28%. There was statistically significant correlation between treatment modality (opening and closing of the space) and tooth regionwith hypodontia (frontal and premolar). In the frontal region were more used opening space but in the premolar region were more used closing space.
 

Key words: hypodontia,  hyperdontia, oligodontia, anodontia

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