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현대사회는 논리적, 이성적 사고능력이 중시되는 정보화시대를 지나 점차 감성적 감각능력이 중시되는 새로운 시대로 전환되는 시점이라 할 수 있다. 하지만 감성 중심의 사회에서도 이성의 중요성이 여전히 유효하며, 이성과 감성 간의 조화롭고 균형 잡힌 발달을 이루는 것이 중요할 것이다. 따라서 이 논고에서는 동아시아의 전통철학인 양명학, 좁게는 양명학 좌파의 사상에 관하여 이를 감성철학으로 인식하고, 중국 명대 말기에 활약한 양명학 좌파의 인물 이탁오(1527~1602)의 사상에 관하여 감성이라는 코드로 고찰해 보고자 하였다. 그리고 이러한 논의과정을 통해 이탁오의 사상도 포함하여 16, 17세기 무렵의 신유학 사상의 전개 양상이 완전히 새로운 사상사적 전환 국면에 직면해 있었다는 사실을 확인할 수 있었다. 그것은 명대 말기 양명학 좌파로 대변되는 일련의 감성 중심 사상운동으로서 그 주요한 특징이 주자학의 이성주의적 사고에 대한 비판과 반성 및 해체의 과정이 진행되었다는 점, 더불어 새롭게 양명학에 바탕을 둔 욕망 긍정의 감성주의적 사고로 전환되었다는 점이다. 이성적 사고로 제어할 수 없는 인간 본연의 자연적 욕망과 감성이 정주학 탄생 500여 년만에 본격적으로 꿈틀대기 시작한 것이다. 이 논고에서의 주요 논의 대상인 이탁오는 정주학적 이성이 지배하던 사회에서 양명학 좌파의 인물들과 마찬가지로 인간의 욕망과 감성에 대한 새로운 자각을 하게 되고, 부정적으로 유학사에서 낙인찍힌 욕망의 잔재들을 끄집어낸다. 그 가운데 욕망하는 주체로서 개체 혹은 사사로움(私)의 발견을 시작으로 감성적 인욕에 대한 적극적 긍정을 강조한다. 또한 개체의 자각을 일으키는 원동력으로서 어린아이의 마음, 즉 순수한 동심(童心)을 자기철학의 전면에 내세웠던 것이다.

Purpose The aim of this study was to determine the impact of different compressive forces on deproteinized bovine bone mineral (DBBM) particles covered by native bilayer collagen membrane (NBCM) during alveolar ridge preservation (ARP) in the molar area, and to identify any histomorphometric and clinical differences according to the compressive force applied. Methods Sockets were filled with DBBM after tooth extraction, and different compressive forces (30 N and 5 N, respectively) were applied to the graft material in the test (30 N) and control (5 N) groups. The DBBM in both groups was covered with NBCM in a double-layered fashion. A crossed horizontal mattress suture (hidden X) was then made. A core biopsy was performed using a trephine bur without flap elevation at the implant placement site for histomorphometric evaluations after 4 months. The change of the marginal bone level was measured using radiography. Results Twelve patients completed the study. The histomorphometric analysis demonstrated that the mean ratios of the areas of new bone, residual graft material, and soft tissue and the implant stability quotient did not differ significantly between the groups (P>0.05). However, the mean size of the residual graft material showed a significant intergroup difference (P, Graphical Abstract

Purpose The aim of this study was to clinically assess the impact of a prefabricated implant-retained stent clipped over healing abutments on the preservation of keratinized mucosa around implants after implant surgery, and to compare it with horizontal external mattress sutures. Methods A total of 50 patients were enrolled in this study. In the test group, a prefabricated implant-retained stent was clipped on the healing abutment after implant surgery to replace the keratinized tissue bucco-apically. In the control group, horizontal external mattress sutures were applied instead of using a stent. After the surgical procedure, the width of the buccal keratinized mucosa was measured at the mesial, middle, and distal aspects of the healing abutment. The change in the width of the buccal keratinized mucosa was assessed at 1 and 3 months. Results Healing was uneventful in both groups. The difference of width between baseline and 1 month was −0.26±0.85 mm in the test group, without any statistical significance (P=0.137). Meanwhile, the corresponding difference in the control group was −0.74±0.73 mm and it showed statistical significance (P, Graphical Abstract

Purpose The aim of this study is to analyze and visualize the distribution of patients visiting the periodontology department at a dental college hospital, using a geographic information system (GIS) to utilize these data in patient care and treatment planning, which may help to assess the risk and prevent periodontal diseases. Methods Basic patient information data were obtained from Dankook University Dental Hospital, including the unit number, gender, date of birth, and address, down to the dong (neighborhood) administrative district unit, of 306,656 patients who visited the hospital between 2007 and 2014. The data of only 26,457 patients who visited the periodontology department were included in this analysis. The patient distribution was visualized using GIS. Statistical analyses including multiple regression, logistic regression, and geographically weighted regression were performed using SAS 9.3 and ArcGIS 10.1. Five factors, namely proximity, accessibility, age, gender, and socioeconomic status, were investigated as the explanatory variables of the patient distribution. Results The visualized patient data showed a nationwide scale of the patient distribution. The mean distance from each patient’s regional center to the hospital was 30.94±29.62 km and was inversely proportional to the number of patients from the respective regions. The distance from a regional center to the adjacent toll gate had various effects depending on the local distance from the hospital. The average age of the patients was 52.41±12.97 years. Further, a majority of regions showed a male dominance. Personal income had inconsistent results between analyses. Conclusions The distribution of patients is significantly affected by the proximity, accessibility, age, gender and socioeconomic status of patients, and the patients visiting the periodontology department travelled farther distances than those visiting the other departments. The underlying reason for this needs to be analyzed further., Graphical Abstract