Radiographic analysis and prevalence of two classifications of impacted mandibular third molars in patients treated at the Dr. Rene Puig Benz UNPHU dental clinic, January 2024 to December 2024.

In the composition of the dental formula, the permanent dentition is present in the most distal
area of both jaws, where the third molar is located. Given its anatomical location and
relationship to the growth and development of the jaws, it can show positional abnormalities
that affect the eruption process. This study is cross-sectional, retrospective, and descriptive.
Conducted at the Dr. Rene Puig Bentz dental clinic, it determined the radiographic analysis of
two classifications of impacted mandibular third molars in patients aged 16 to 40 years with
the help of 622 panoramic radiographs. The statistical data obtained during the research were
entered into the Microsoft spreadsheet for Windows 2019 Microsoft Excel. It (72.9%) occurred
in younger patients aged 16-20 years, where retention of molar 4.8 predominated. (45.5%)

occurred in patients aged 21-40 years, while the proportion of non-retained and absent molars
increased with age. In this group, molar 3.8 showed the highest retention rate. (44.8%)
occurred in non-retained molars, most frequently in molar 3.8. By gender, 60.3% occurred in
females, mostly in molar 4.8. 44.9% occurred in the category of non-retained molars in both
genders, followed by retained molars (32.1%), with very similar proportions between males
and females. In molar 3.8, the retained condition predominated in both sexes (44.1%), with a
slightly higher frequency in males (45.4%) than in females (43.3%). Missing molars showed a
lower percentage than the previous ones (around 22%) with no marked differences between
sexes. According to Winter's classification, with a (60.3%) differentiation by sex, most cases
correspond to females in molar 4.8. the most frequent positions were mesioangular (38.3%)
and vertical (30.7%), with a lower percentage than the previous categories: horizontal (6.3%),
distoangular (1.4%), and inverted (0.2%). In molar 3.8, the mesioangular position
predominates (40.2%), followed by the vertical (28.0%) and distoangular (22.5%) positions,
while the horizontal (1.1%) and inverted (8.2%) positions were rare.Conclusion: The study
determined the frequency and most common positions of impacted third molars in patients
using the Winter and Pell & Gregory classifications, and found that the most frequent position
according to Winter is mesioangular and vertical, and according to Pell & Gregory Class I -
Level A, which were more prevalent and associated with less surgical complexity. The age
group with the highest retention was 17 to 20 years, with young adults being the most
affected. The molar with the highest retention was 4.8 (57%) compared to 3.8 (43%), and
although more women were evaluated, no significant differences were found by gender.