Table 1 . Relationship between retention and other dental phenomena .
Index Patients without supernumerary teeth Patients with supernumerary teeth Patients without Odonthoma Patients with Odonthoma Patients without transpositions Patients with transpositions Patients without cysts Patients with cysts Patients without microdontia Patients with microdontia
Total
its localization and coherence with the neighboring compact structures ( ankylosis zone , compacta of the sinus wall et cetera .). The treatment procedure can continue with the transplantation of the canine in the alveolar rugae or placing an implant 10 . This problem is frequently met among modern patients and many authors report similar occurrence percentages .
2 . Materials and methods 2.1 . Aim . The aim of our survey is to find out the prevalence of impacted teeth , which tooth group is most likely to be affected , gender ratio , multiple impaction and the relation among them as well as to find out if the hypothesis that there is a relation between the treatment protocol and the group of impacted tooth holds true . 2.2 . Material and methods . We analyzed the documentation ( clinical and X-ray ) of 182 patients treated in our practice for the last 8 years . These 182 patients have been selected out of all 1604 patients . They are patients diagnosed with impaction of various tooth groups , while the excluded patients cover the group with impacted third molars . The average patient age is 14.7 ± 3.5 years , this youngest patient being 9 years old and the oldest 32 years old . The gender ratio is the following : 62 males ( 14.4 ± 3.1 years ) and 120 females ( 14.8 ± 3.7 years ), which means male / female - ½ or 34.1 % males and 65.9 % females . Three clinical protocols have been used in the treatment of these patients : The first group - in the area reserved for the impacted tooth in the tooth arc , the supporting teeth are leveled , the impacted tooth is exposed surgically and then it is orthodontically puled out and the inserted one is positioned on its place in the tooth arc . The second group - if there is lack of space in the
N % N % N % N % N % N % N % N % N % N % N %
Patients without impacted teeth 1405 98,8 17 1,2 1420 99,9 2 0,1 1413 99,4 9 0,6 1400 98,5 22 1,5 1395 98,1 27 1,9 1422 100,0
Patients with impacted teeth 175 96,2 7 3,8 177 97,3 5 2,7 177 97,3 5 2,7 176 96,7 6 3,3 176 96,7 6 3,3 182 100,0
Total 1580 98,5 24 1,5 1597 99,6 7 0,4 1590 99,1 14 0,9 1576 98,3 28 1,7 1571 97,9 33 2,1 1604 100,0
upper tooth arch , the first step is to create space by distalization of the upper molars using the Pendulum appliance . After insuring the space , the protocol of group one is used . Third group – if there is a lack of creating a space using the conservative means in the tooth arch , the impacted or the neighboring tooth of the arch is extracted in order to open the space and then protocol one is applied , or after the extraction of the impacted tooth , the arch is level and the occlusion is normalized without it . In our study , we compare the second and third group treatments because for the first group routine treatments have been used , which do not require individual approach . Patients with impacted teeth and a reserved space for them in the dental arch are rarely found . To process the data we used the special statistics packet SPSS version 13.0 was used . The critical level of significance of α = 0.05 was used . The relevant zero hypotheses are rejected when P value is lower than α . The used Chi-square test or Fisher ’ s exact test were used to analyze the relation between the categorical data . Independent Samples T-test were used when the distribution is normal for the variable researched . The one-Sample Kolmogorov-Smirnov test was used to check the frequency distribution .
3 . Results . The most common impacted teeth are the upper canines , namely 137 teeth ( 68 – 37.9 % in the right and 69 – 37.4 % in left ) followed by the upper second premolars – 50 teeth ( 25 – 13.7 % in right and 25 – 13.7 % in left ), then the lower second premolars 27 teeth ( 6 – 3.3 % in the right and 21 – 11.5 %), the lower canine 20 teeth ( 10 – 5.5 % on the right and 10 - 5.5 % on the left ), the lower second molar – 11 teeth
p
0,014
< 0,001
0,015
0,122
0,259
Original Articles
Stomatology Edu Journal
265