Nyimi Bushabu Fidele1*, Sekele Isouradi Bourley2, Em Kalala Kazadi3, Duan Feng1, C. Mfutu Mana4, P. Bobe Alifi4, J. Bolenge Ileboso3, P. Muyembi Muinaminayi4, Guan Jian1 and A. Mantshumba Milolo2

1Department of Oral and Maxillofacial Surgery, School of Stomatology, Second Affiliated Hospital of
Jiamusi University, Jiamusi, China.
2Prosthodontics and Orthodontics Service, Affiliated Hospital of Kinshasa University, DR. Congo.
3Stomatology and Maxillofacial Service Unit of Periodontology Surgery, Affiliated Hospital of Kinshasa
University, DR. Congo.
4Unit of Oral Surgery, Affiliated Hospital of Kinshasa University, DR. Congo.
Authors’ contributions
This work was carried out in collaboration between all authors. Authors NBF, SIB, EKK and DF
designed the study, wrote the protocol and the first draft of the manuscript. Authors CMM, PBA and
JBI managed the literature searches and analyses statistics data. Authors PMM, GJ and AMM
reviewed the manuscript and managed the final version by all verification. All authors read and
approved the final manuscript.
Article Information
DOI: 10.9734/BJMMR/2016/27134
Editor(s):
(1) Ibrahim El-Sayed M. El-Hakim, Ain Shams University, Egypt and Riyadh College of Dentistry and Pharmacy, Riyadh,
Saudi Arabia.
Reviewers:
(1) Rodrigo Lorenzi Poluha, State University of Maringá, Brazil.
(2) Parveen Akhter Lone, Indira Gandhi Government Dental College Jammu, University of Jammu, Jammu, India.
Complete Peer review History: http://sciencedomain.org/review-history/15388

British Journal of Medicine & Medical Research

SCIENCEDOMAIN international
www.sciencedomain.org

Abstract

Aims: To investigate the prevalence and pattern of impacted teeth in the sample of North-East China.
Study Design: Descriptive and Retrospective study. Place and Duration of Study: School of Stomatology, Department of oral and maxillofacial
surgery, Second Affiliated Dental Hospital of Jiamusi University Between Jun 2013 to October 2015.
Methodology: Orthopantomogram radiographs and clinical dental records are used to determine

the impacted teeth in Five thousand seven hundred and eighty four randomly selected patients. All of 5784 patients were examined (3754 males, 2030 females), with an age range of 7-76 years and a mean age of 23±4 years. The minimum age for inclusion was 7 years. The data was entered into
the computer and analyzed using the Statistical Package for Social Sciences (version 20. Inc.Chicago, USA). The Pearson’s Chi‑square was used to determine the differences in the distribution of impacted teeth between genders. The significant level was tested at the 5%.
Results: Out of 5784 patients, a total of 1342 (23.2%) presented an impacted tooth, 701 (52.2%) were male and 641(47.8%) were female. Among them, 1485 were the number of impacted teeth. The prevalence of impacted teeth was 23.2%; third molars were the most common (11.70%; n=677), followed by canines (5.55%; n=321), incisor and premolars (2.92%; n=169 and 2.82%; n=163). The impacted teeth were mostly seen in the age group between 17-26 years old (43.8%; n=774). No significant relationship between impacted teeth among the gender was found (p=0.22).
Conclusion: The prevalence of impacted teeth was 23.2% in this research and the patients aged between 17 to 26 years were most affected. The minimum age of 7 years must be an inclusion criteria study for to assess the real prevalence of incisor impaction.