Effectiveness of dental sealant under insurance coverage in South Korea.

Objectives: This study aimed to investigate the effectiveness of a national population-based dental sealant in South Korea.

Materials And Methods: This nationwide, population-based cohort study involved all children in South Korea aged 6-7 years who received sealants from 2010 to 2011 and were followed up for 10 years using the Korea National Health Insurance Service (NHIS) database. After 1:2 propensity score matching, 857,723 children were selected for analysis.

Risk factors and incidence of oral tumors: Findings from a longitudinal population-based study.

Objective: This study investigated risk factors contributed to benign and malignant oral tumors using longitudinal cohort big data.

Materials And Methods: We included individuals aged ≥40 years who participated in the National Health Examination in South Korea between 2003 and 2004. National Health Insurance claims data after 16 years were used to determine the incidence of oral tumors and the related risk factors.

Efficacy of active noise-canceling headphones in patients undergoing ultrasonic scaling.

Purpose: Dental fear hinders patients from receiving appropriate dental treatment. In particular, the noise generated by high-speed air turbines and ultrasonic scalers can adversely affect patients. Many efforts have been made to reduce the discomfort caused by noise, but no methods are definitively recommended.

Evaluation of failed implants and reimplantation at sites of previous dental implant failure: survival rates and risk factors.

Purpose: The purpose of this study was to evaluate failed implants and reimplantation survival and to identify the relative risk factors for implant re-failure.

Methods: Ninety-one dental implants were extracted between 2006 and 2020 at the National Health Insurance Service Ilsan Hospital, including 56 implants in the maxilla and 35 implants in the mandible that were removed from 77 patients. Patient information (e.

Long-term outcomes after peri-implantitis treatment and their influencing factors: a retrospective study.

Purpose: This study aimed to determine the long-term outcomes after peri-implantitis treatment and the factors affecting these outcomes.

Methods: This study included 92 implants in 45 patients who had been treated for peri-implantitis. Clinical data on the characteristics of patients and their implants were collected retrospectively.

Supraeruption as a consideration for implant restoration.

Purpose: The aim of this study was to compare the prevalence, amount, and rate of supraeruption of the maxillary second molar according to sex, age, and history of periodontitis.

Methods: Data were collected retrospectively from the charts and panoramic radiographs of 65 patients who were scheduled to undergo implant placement at the site of the mandibular second molar. The amount of supraeruption of the maxillary second molar and the alveolar bone level of the neighboring teeth were measured on digital panoramic radiographs.

Complication rates for various retention types in anterior implant-supported prostheses: A retrospective clinical study.

Statement Of Problem: Implant-supported prostheses have typically been retained by cement or screws, each of which has advantages and disadvantages. Two new types of prosthesis with complementary advantages and disadvantages have been proposed: the screw- and cement-retained prosthesis, which combines cement and screw retention, and the antiloosening inner-post screw (ALIPS) type, which uses lateral screws. Both esthetic and functional factors should be considered for anterior prostheses; however, clinical studies of the complication rates of these designs are lacking.

The socioeconomic impact of Korean dental health insurance policy on the elderly: a nationwide cohort study in South Korea.

Purpose: The purpose of this retrospective study was to investigate the relationships of types of dental insurance coverage in Korea with sociodemographic characteristics and the prevalence of systemic and oral diseases, as well as to evaluate the socioeconomic impact of Korean dental insurance policies.

Methods: Sample cohort data from 2006 to 2015 were obtained from the National Health Insurance Service. Patients were divided into 2 groups.

Panoramic radiography can be an effective diagnostic tool adjunctive to oral examinations in the national health checkup program.

Purpose: We investigated correlations between the findings of oral examinations and panoramic radiography in order to determine the efficacy of using panoramic radiographs in screening examinations.

Methods: This study included patients who visited dental clinics at National Health Insurance Service (NHIS) Ilsan Hospital for checkups during 2009-2015 and underwent panoramic radiographic examinations within 1 year prior to the oral examinations. Among the 48,006 patients who received checkups, 1,091 were included in this study.

The prosthetic abutment height can affect marginal bone loss around dental implants.

Background: Marginal bone loss (MBL) is considered an important determinant of implant success, and establishing the peri-implant biological width has been regarded to influence MBL around implants. However, few studies have attempted to show the relationship between the crown/abutment gap and MBL.

Purpose: To evaluate the effect of the prosthetic abutment height on MBL of dental implants.

Osteoblastic behavior to zirconium coating on Ti-6Al-4V alloy.

Purpose: The purpose of this study was to assess the surface characteristics and the biocompatibility of zirconium (Zr) coating on Ti-6Al-4V alloy surface by radio frequency (RF) magnetron sputtering method.

Materials And Methods: The zirconium films were developed on Ti-6Al-4V discs using RF magnetron sputtering method. Surface profile, surface composition, surface roughness and surface energy were evaluated.

Effect of magnesium and calcium phosphate coatings on osteoblastic responses to the titanium surface.

Purpose: The aim of this study was to evaluate the surface properties and in vitro bioactivity to osteoblasts of magnesium and magnesium-hydroxyapatite coated titanium.

Materials And Methods: Themagnesium (Mg) and magnesium-hydroxyapatite (Mg-HA) coatings on titanium (Ti) substrates were prepared by radio frequency (RF) and direct current (DC) magnetron sputtering.The samples were divided into non-coated smooth Ti (Ti-S group), Mg coatinggroup (Ti-Mg group), and Mg-HA coating group (Ti-MgHA group).

Surface characteristics and bioactivity of an anodized titanium surface.

Purpose: The aim of this study was to evaluate the surface properties and biological response of an anodized titanium surface by cell proliferation and alkaline phosphatase activity analysis.

Methods: Commercial pure titanium (Ti) disks were prepared. The samples were divided into an untreated machined Ti group and anodized Ti group.

Effect of surface treatment on bond strength of Ti-10Ta-10Nb to low-fusing porcelain.

Statement Of Problem: Ti-10Ta-10Nb alloy is a promising alloy for metal ceramic crowns because of its good corrosion resistance and low cytotoxicity. However, more information is needed on the bond strength between this alloy and porcelain.

Purpose: The purpose of this study was to compare the surface morphology, surface roughness, and bond strength of a Ti-10Ta-10Nb alloy, pure Ti, and a Ti-6Al-4V alloy.

Surface characteristics and osteoblastic cell response of alkali-and heat-treated titanium-8tantalum-3niobium alloy.

Purpose: The aim of the present study was to evaluate the biological response of alkali- and heat-treated titanium-8tantalum-3niobium surfaces by cell proliferation and alkaline phosphatase (ALP) activity analysis.

Methods: Commercial pure titanium (group cp-Ti) and alkali- and heat-treated titanium-8tantalum-3niobium (group AHT) disks were prepared. The surface properties were evaluated using scanning electron microscopy, energy dispersed spectroscopy and X-ray photoelectron spectroscopy (XPS).

The effects of a novel botanical agent on lipopolysaccharide-induced alveolar bone loss in rats.

Background: The development of host-modulatory agents with low risk of adverse effects has been needed to treat periodontitis, a chronic inflammatory disease. A botanical mixture of extracts from two natural substances, Panax notoginseng and Rehmannia glutinosa Libosch, was developed as a novel botanical agent synthesized with anti-inflammatory effect. The aim of this study is to evaluate the effects of the botanical mixture on the release of inflammatory cytokines and its inhibitory effect on lipopolysaccharide (LPS)-induced alveolar bone loss (ABL) in a rat model.

A case of squamous cell carcinoma presenting as localized severe periodontitis in the maxillary gingiva.

Background: Squamous cell carcinoma (SCC) is the most common malignant neoplasm of the oral cavity. The clinical features of gingival SCC include alveolar bone loss and erythematous lesion. Therefore, gingival SCC sometimes presents as advanced periodontitis.