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At present, more adult patients seek orthodontic treatment so orthodontists are more likely to face periodontal patients and esthetic appliance demand increases. This case report presents the management of an adult patient with mild periodontitis and severe crowding using lingual appliances and mini-screw anchorage. Interproximal stripping was performed to create space and correct the triangular tooth shape and gingival black triangles. Four mini-screws were implanted in the palatal alveolar bone and mandibular buccal shelf to distalize the entire upper and lower arch. According to the case report, interproximal stripping in combination with mini-screw-assisted entire arch distalization and lingual appliances may be an effective space-creation approach in patients treated with non-extraction way.

At present, orthodontists are treating more adult patients with missing or hopeless first molars as these teeth have the highest incidence of decay in permanent dentition. This case report presented the closure of extraction spaces of four first molars in a patient with Class II malocclusion. High torque self-ligating brackets were used combined with anterior bite turbo and Class II elastics. According to the case report, the combination of anterior bite turbo and Class II elastics may have the possibility to correct bite deepening during space closure and allow further upper incisor retraction and Class II correction.

This case report presents the management of an adult patient with moderate crowding in both arches and anterior crossbite with passive self-ligating lingual brackets. The orthodontic setup and bracket positioning was done digitally with an in-house approach. Virtual setup and bracket placement was performed on Autolign software (Diorco, Gyeonggi-do, Korea). The indirect bonding trays were vacuum-formed on printed malocclusion models with resin brackets. Two palatal and two buccal shelf miniscrews were used for two-arch distalization to correct proclined incisors and anterior open bite after leveling and alignment stage. After 12-month treatment, normal overbite,overjet and well-aligned dentition were achieved without premolar extraction. The incisors were uprighted slightly and the protrusive lower lip was retracted with improvement of facial harmony. One-year retention records confirmed that the outcome was stable. In-house digital setup and bracket placement could be a cost-effective approach for indirect lingual bracket bonding. Two-arch distalization with miniscrew anchorage may have the possibility of managing moderate crowding cases without premolar extraction or interproximal stripping.

Objectives Provisional crowns play an integral role in prosthodontic therapy and need to be fabricated with high accuracy to ensure good marginal fit and proper contour. The aim of this study is to evaluate the effect of 3D printer's horizontal pixel resolution on trueness of the intaglio surface, external surface, and marginal area and the actual marginal adaptation of the interim crowns. Materials and Methods A gypsum reference model of mandible with a prepared right first molar was scanned with a dental laboratory scanner (AutoScan-DS-MIX, Shining 3D) and a digital provisional crown was design using the computer-aided design (CAD) software (Exocad). The provisional crown was manufactured by two printers with different horizontal resolutions (Sonic Mini 4K Printer and Sonic Mini 8K Printer). The printed crowns were scanned using the aforementioned scanner. The trueness of the external surface, internal surface, and marginal area of the provisional crowns was evaluated by comparing the scanned data with the reference CAD design data using a 3D inspection software (Geomagic Control X, 3D systems). The trueness of the crown manufactured by two printers was compared by a two-sided test (α = 0.05). Finally, the marginal adaptation of the provisional crowns was evaluated on the printed removable dies and compared. Results The results revealed that there was a significant difference in the trueness of the marginal area and the marginal adaptation (p Conclusions It can be concluded that the trueness of provisional crown marginal area and the marginal adaptation was affected by the horizontal resolution of the 3D printer.

BACKGROUND: Fluoride therapy has long been used extensively to prevent dental caries. Fluoride appears in a variety of dental care products such as mouth rinses, dentifrices, gels, etc. HMU Fluorinze is the first mouthwash containing fluoride in Vietnam. AIM: This research was conducted to evaluate the efficacy of HMU Fluorinze mouthwash on remineralizing enamel in laboratory conditions. METHODS: 20 third molar teeth were cleaned and covered with nail polish, except for a 3 x 3 mm square on their buccal surfaces. These teeth underwent two steps: demineralization using Coca-cola and remineralization for 20 daysusing standard calcifying solution (control group) and standard calcifying solution + HMU Fluorinze mouthwash 2 times/day (experimental group). The index measured of enamel structure after demineralization and remineralization was assessed by a DIAGNOdent pen 2190. RESULTS The indices measured of the control group and experimental group at baseline were 3.65 ± 0.76 and 3.35 ± 0.64 respectively. After demineralization the control group measured 21.78 ± 4.48 and the experimental group, 20.25 ± 2.26. Following remineralization, the control group scores were 6.30 ± 1.03 and the experimental group, 3.90 ± 1.24, demonstrating statistical significance (p < 0.01) between the two groups. After 20 days, the results for the experimental group did not differ from the original results (p = 0.272), in contrast with the control group (p < 0.01). CONCLUSION Results show that HMU Fluorinze mouthwash is better at remineralizing than standard calcifying solution.

Background Child's dental fear has been reported as one of the reasons that increase, aggravate dental diseases and facilitate other oral diseases. This study is aimed to describe the type and prevalence of dental fear and to assess the relationship between cavities of primary teeth and dental fear in 7-year-old children at Phulam Primary School, Hanoi. Methods The sample comprised of 132 children aged 7 years. The questionnaire examined the profile of participants and assessed their dental fear using the Children's Fear Survey Schedule-Dental Subscale (CFSS-DS). Children have “dental fear” when the total CFSS-DS score is greater than or equal to 38. By contrast, those without dental fear gain the total point which is less than 38. After completing the questionnaire, a dental examination was undertaken according to the International Caries Detection and Assessment System (ICDAS). Results The prevalence of dental fear was 34.85%. Fear scores were highest for “Dentist drilling” (2.92 ± 1.47) and “Injections” (2.87 ± 1.53). In the univariate analysis, the odds of girls having dental fear were approximately equal to boys (OR = 0.98, 95% CI = −0.75-0.70). The odds of only children having dental fear were 1.6 times higher than others, but there were not significant. Dental fear was found to be no associated to sex, birth order and primary dental caries (p > 0.05). Conclusion Our findings demonstrated the status of 7-year-old children's dental fear at Phulam primary school, and found that primary dental caries had no correlation with child dental fear score.

Humans have two sets of teeth, deciduous teeth and permanent teeth. When primary teeth fall out, permanent teeth erupt to maintain the chewing function and jaw development. Shedding occurs with increasing level of mobility in primary teeth as a result of root resorption. This report describes an uncommon clinical case that occurred in primary molars with internal resorption and pinkish discoloration. Pink tooth is worrisome for children and parents. Children should have their teeth examined on a regular basis to detect any problems in the process of tooth shedding and eruption.

Objective: The purpose of this study is to characterize the clinical features of patients with avulsed teeth.

Objectives: 1) To give a description for dental caries status of children suffer ing primary nephrotic syndrome in National Children’s Hospital 2016-2017; 2) to provide a comment on mentioned-above children dental caries rate related factors.

Objectives: 1) To give a description for dental caries status of children suffer ing primary nephrotic syndrome in National Children’s Hospital 2016-2017; 2) to provide a comment on mentioned-above children dental caries rate related factors. Method: this is a descriptive cross-sectional study conducted on 236 children 6-14 years old who are diagnosed with primary nephrotic syndrome and under treatment in Department of Nephrology -Dialysis in National Children’s Hospital from 11/2016 to 5/2017