ABSTRACT
@#AIM:To measure the macular and peripapillary choroidal thickness(CT)in primary angle-closure disease(PACD)with enhanced depth imaging optical coherence tomography(EDI-OCT). To explore the characteristics of CT in each subtypes of PACD and to evaluate its role in the pathogenesis of PACD.<p>METHODS: This was a prospective clinical study. A total of 155 PACD eyes(82 patients)were enrolled in the study, including 24 PACS eyes(24 patients), 35 APAC eyes(28 patients), 38 CPAC eyes(30 patients), 58 eyes PACG(38 patients). 87 normal eyes(87 patients)were set up as control. The EDI-OCT was used to measure the macular and peripapillary choroidal thickness in all study patients. <p>RESULTS: PACD eyes exhibited thicker choroid than the control eyes at all macular locations(<i>P</i><0.05). Choroidal thickness of PACG was thinner than other PACD eyes in area except for 3mm nasal from the fovea(<i>P</i><0.05). Subfoveal choroidal thickness(SFCT)of APAC was thickest(357.17±61.49μm), followed by PACS group(318.04±56.52μm). PACG group presented the thinnest SFCT(263.55±67.87μm). The average macular CT at 1mm centered at the fovea was thinner than SFCT(<i>P</i><0.05)in all subgroups except for CPAC. The average macular CT at 3mm as well as 1mm centered at the fovea was thinner than SFCT in all subgroups(<i>P</i><0.05). There was no statistical differences in CT at peripapillary locations between PACD and controls groups(<i>P</i>>0.05).<p>CONCLUSION: In PACD and controls groups, the CT of subfoveal location was the thickest with decreasing thickness when moving eccentrically from the fovea. The thicker CT might be another anatomic characteristic of PACD. Increased CT in macular location might be a contributing factor of acute attacks. There was no characteristic distinction in the peripapillary CT of PACD when compared with normal controls.
ABSTRACT
STATEMENT OF PROBLEM: Many dental clinicians are concerned about immediate loading of inserted implants. However, there have been few clinical studies surveying the success rates of immediate loading, based on Korean implant systems. PURPOSE: The aim of this study was to evaluate the outcome of immediate functional loading of the implant (SinusQuick(TM) EB, Neobiotech Co., Seoul, Korea) in partially edentulous maxilla or mandible. MATERIAL AND METHODS: Total 15 implants were placed. Within 2 weeks after implant insertion, provisional implant-supported fixed partial dentures were delivered to the patients. Quantitatively, marginal bone loss was measured at the time of immediate loading, after 3-months of continued loading and at the last follow-up. The mean follow-up period was 4.8 months. RESULTS: Mean marginal bone loss from implant surgery to early loading, 3-months follow-up and last follow-up was 0.03 +/- 0.07 mm, 0.16 +/- 0.17 mm and 0.29 +/- 0.19 mm. No implant failed up to 6 months after insertion, resulting in a 100% survival rate. CONCLUSION: Immediate loading exhibited high success rate in partial edentulism for up to 6 months. Well-controlled long term clinical studies with large sample size are necessary to confirm this finding.
Subject(s)
Humans , Dental Implants , Denture, Partial, Fixed , Follow-Up Studies , Mandible , Maxilla , Prospective Studies , Sample Size , Survival RateABSTRACT
The purpose of this study is to evaluate prospectively the effect of different bonding systems and retention grooves on the clinical performance of resin restorations in non-carious cervical lesions (NCCLs). Thirty-nine healthy adults who had at least 2 NCCLs in their premolar areas were included in this study. One hundred and fifty teeth were equally assigned to six groups: (A) Scotchbond Multi-Purpose (SBMP, 3M ESPE, St. Paul, MN, USA, 4th generation bonding system) without retention grooves; (B) SBMP with retention grooves; (C) BC Plus (Vericom Co., Anyang, Gyeonggido, Korea, 5th generation bonding system) without retention grooves; (D) BC Plus with retention grooves; (E) Adper Prompt (3M ESPE, Seefeld, Germany, 6th generation bonding system) without retention grooves; (F) Adper Prompt with retention grooves. All cavities were filled with a hybrid composite resin, Denfil (Vericom Co., Anyang, Gyeonggido, Korea) by one operator. Restorations were evaluated at baseline and at 6-month recall, according to the modified USPHS (United States Public Health Service) criteria. Additionally, clinical photographs were taken and epoxy resin replicas were made for SEM evaluation. At 6-month recall, there were some differences in the number of alpha ratings among the experimental groups. But, despite the differences in the number of alpha ratings, there was no significant difference among the 3 adhesive systems (p > 0.05). There was also no significant difference between the groups with or without mechanical retention (p > 0.05). Follow-ups for longer periods than 6 months are needed to verify the clinical performance of different bonding systems and retention grooves.