Prevalence and Pattern Occurrence of Supernumerary Teeth in the North-East Heilongjiang Population of China

Aims: The objective of the current research was to determine the prevalence of supernumerary teeth and investigate its characteristic and complications in the Chinese population from the North-East Heilongjiang region. Materials and Methods: It was a descriptive and retrospective study which used registered notes and panoramic radiographs of 12,984 patients who visited the Department of Oral and Maxillofacial Surgery in the 2nd Affiliated Hospital of Jiamusi University, China between June 2011 to November 2015. Patients diagnosed with any syndrome or hereditary diseases were excluded from the study. The features of supernumerary teeth were noted and the data were analyzed using SPSS program, (version 20, Inc., Chicago, USA). The Chi-square test was used to determine the differences in the distribution of supernumerary teeth. It was tested at the 5% level of significance. Results: The prevalence was 5.2% and the most prevalent supernumerary teeth was incisor with 3.39% (n = 441). The supernumerary teeth were seen more in maxilla than mandible. The male to female ratio was 2.9:1. Specifically, higher prevalence of supernumerary teeth in male gender was statistically significant (p = 0.03). The supernumerary teeth mostly occurred in children of 5 - 10 years (62.3%), followed by young adolescent between 11 - 16 years (26.5%). Conclusion: The prevalence of supernumerary teeth was widely seen in children and young adolescent of Chinese population. The occurrence was mostly seen in maxilla than mandible and significantly higher in male than female.

Periodontal Diseases in Pregnant Women in Prenatal Consultation

Background: The relationship between pregnancy and periodontal health had well documented in the literature. Of many studies of periodontal diseases in the Democratic Republic of Congo, no study had evaluated these diseases in pregnant women during Prenatal Consultation (PC). This study aimed to describe the occurrence and clinical profile of periodontal diseases in pregnant women admitted to the PC at the General Military Hospital of BOBILA. Materials and Methods: It is a cross-sectional and analytical study of pregnant women admitted to the PC from August to December 31, 2018, at the General Reference Military Hospital of BOBILA/Kinshasa City. The data were collected through a survey combined with the stomatological interview. Sociodemographic data, clinical and periodontal indices included Oral Hygiene Index Simplified (OHI-S), Bleeding on Probing (BOP), and Periodontal Disease Index (PDI) were assessed. The statistical analyses were carried out using the SPSS version 20.0 software. The Chi-square tests, Student t-test were used to determine differences in the distribution of variables, and the odd Ratio with a confidence interval (IC) at 95% was used to estimate the degree of association. The results were significant at p < 0.05. Results: Of the 105 pregnant women received at the PC, 83 were included in this study. The age group between 20 - 29 was the most represented, with a predominance of stay-at-home mothers (75.9%) and married cases (73.4%), they had an average economic status (56.6%) and a secondary education level (63.8%). Gingival bleeding (44.6%) was the main complaint of the pregnant. Gestational age was a significant factor associated with gum bleeding (p < 0.005). Most of the pregnant had poor oral hygiene, localized gravidities (69.6%) during the third semester. Conclusion: A significant proportion of women had experienced periodontal diseases during the pregnancy period, mostly in the third trimester, and was associated with a gestational age of pregnant women.

Profile of Aggressive and Chronic Periodontitis in Kinshasa Dental Hospitals, DR Congo

Periodontitis is a prevalent destructive gum disease, characterized by loss of tissues supporting the teeth. The two main forms, chronic and aggressive have not been assessed in Kinshasa, DR Congo. Aim: The aim of this study was to investigate the Prevalence and the pattern of chronic periodontitis (CP) and aggressive periodontitis (AP) in order to improve its management. Materials and Methods: A cross sectional study of 404 subjects attending the dental services of the four hospitals of Kinshasa city, from October 2013 to April 2014 was carried out. The plaque index (PlI), bleeding on probing (BOP), probing pocket depth (PPD) and frequency of tooth brushing (FTB) were the parameters assessed. The SPSS software version 20.0 was used. Results: Out of 404 patients examined, 322 (79.7%) had chronic periodontitis versus to 44 (10.9%) of aggressive periodontitis. The female was higher than males with a sex ratio of 1.49:1 and the age group between 20 and 29 was the most represented. PPP of ≥6 mm was found in 24.6%, 5 or 5.5 mm in 27.3% and PPP of 3.5 to 4.5 mm in 48.1% of patients with periodontitis. Significant difference was found between CP and AP according to age variable, p-value < 0.001. PlI for CP was 0.97 (SD ± 0.38) while that for AP was 0.90 (SD ± 0.43). No significant differences were found between PlI, p-value = 0.47;FTB (p = 0.055) and BOP of subjects with AP and those with CP (p = 0.105). Conclusion: The two main forms of periodontitis diseases are more prevalent in patients attending dental services in Kinshasa and affect male as well as female. Age remains an essential variable to distinguish between CP and AP.

Keratocyst Odontogenic Tumor (KCOT): Treatment Methods at the Second Affiliated Hospital of Jiamusi University

Many studies have been done about the treatment of KCOT, but the recurrence rate still remains high despite the combination of surgical techniques used, associated with or without the use chemical solutions such as Carnoy’s solution or Cryosurgery. Currently, there is no consensus concerning the therapeutic choice for the KCOT. The purpose of this study was to evaluate the different treatment methods used for the management of KCOT in the Second Affiliated Hospital of Jiamusi University and the results obtained from those treatment methods. Settings and Design: Clinical study was done at the Second Affiliated Hospital of Jiamusi University. Materials and Methods: Analytical retrospective review of 63 cases treated surgically from 2009 to 2015 at the Maxillofacial and Oral Surgery Department of the Second Affiliated Hospital of Jiamusi University. All cases diagnosed as KCOT and registered in the archives were used. The level of statistical significance was set at P < 0.05. Results: Of the 63 cases, 55.56% were male and 44.44% female. The sex ratio was 1.25 in favor of male and the average age was 42 years. 81% of the lesions were located in the mandible. Of 40 cases treated by enucleation with peripheral ostectomy, curettage and electric cauterization with application of 2% iodine tincture, no recurrence was found. Of 20 cases treated by the same surgical method but without the application of 2% iodine tincture, recurrence was found in 3 cases (4.76%). 3 cases treated by resection had no recurrence. Significant relation between recurrence and type of treatment was found (P < 0.05). Conclusion: In our series, those cases that were treated by combination of surgical methods used with 2% iodine tincture showed an “improvement” in the reduction of recurrence, suggesting a future question to be examined in experimental study is to test the effectiveness of 2% iodine tincture.