Immediate implant placement is one of the treatment options in postextraction sites in anterior region. This article describes the high esthetic value of a single-tooth implant immediately placed in the anterior maxilla using a flapless approach and modifying a provisional restoration. The case reported illustrates the practical procedure involved in developing natural esthetics with modifying a provisional restoration. The technique provides an accurate impression of the soft tissue through the intraoral use of provisional restoration. The final restoration uses a custom-made titanium abutment and porcelain fused gold crown. The technique is relatively simple and provides excellent results from an esthetic point of view, which is demonstrated by the results of pink esthetic scores and white esthetic scores after 1 year.
Crowns ; Dental Implants, Single-Tooth ; Dental Porcelain ; Esthetics ; Humans ; Maxilla ; Titanium

Over the past decades, conventional complete dentures were used for various patients although they have incomplete function. Overdenture using dental implants could help the improvement of denture function. In this case, a fully edentulous patient was treated with a conventional complete denture on the maxilla and implant retained overdenture retained by 2 freestanding implants placed in the anterior region of the mandible, following recommendations from the 2002 McGill. Locator attachments were used for retention of the mandibular overdenture. Patient was satisfied with the final maxillary full denture and mandibular implant retained overdenture in esthetic and functional aspect.
Dental Implants ; Denture, Complete ; Denture, Overlay ; Dentures ; Humans ; Mandible ; Maxilla ; Retention (Psychology)

It is well known that ketamine produces an increase in the heart rate and blood pressure. Lidocaine has a direct myocardial depressant effect with indirect stimulant effects mediated by the autonomic nervous system, and propranolol, beta-adrenergic receptor blockade, has negative chronotropic effects through the beta-adrenergic blockade. In order to investigate the effect of propranolol and lidocaine on the heart rate and blood pressure increased by ketamine, lidocaine, and/or propranolol were administered intravenously in awake patients. The results were as follows. 1) In ketamine(2 mg/kg) receiving group, the heart rate increased 16-19 beats per minute and systolic, diastolic and the mean blood pressure increased significantly. 2) In ketamine(2 mg/kg)-lidocaine(2 mg/kg) receiving group, the heart rate increased l2-14 beats per minute, and the systolic, diastolic and mean blood pressure increased significantly. 3) In ketamine(2 mg/kg)-propranolol(0.02 mg/kg) receiving group, the heart rate increased below 5 beats per minute and systolic, diastolic, and the mean blood pressure increased significantly. 4) In ketamine(2 mg/kg)-propranolol(0.02 mg/kg)-lidocaine(2 mg/kg) receiving group, the heart rate increased only 3-4 beats per minute and systolic, diastolic, and mean pressures increased significantly. From the above results, the chronotropic effect of ketamine was markedly attenuated by propranolol or propranolol-lidocaine but not attenuated by lidocaine, and the pressor effect was not attenuated by lidocaine, or propranolol and propranolol with lidocaine.
Autonomic Nervous System ; Blood Pressure* ; Heart Rate* ; Heart* ; Humans ; Ketamine* ; Lidocaine* ; Propranolol*

Bone Substitutes ; Chlorhexidine ; Granulation Tissue ; Hygiene ; Inflammation ; Membranes ; Peri-Implantitis ; Tetracycline ; Tissue Banks ; Transplants ; Wound Healing

PURPOSE: We compared intra-individual visual outcomes and patient satisfaction after implantable contact lens (ICL) and Toric ICL implantation. METHODS: Twenty-eight eyes of 14 patients were enrolled in this retrospective study. One eye of each patient was assigned to ICL (ICL Group), and the contralateral eye was allocated to Toric ICL (Toric ICL Group). All patients were examined for visual acuity, refraction, intraocular pressure, slit lamp measurements, and satisfaction one week, one month, two months, and six months postoperatively. RESULTS: Mean spherical equivalents of the two groups were corrected from -7.83D (ICL Group) and -5.55D (Toric ICL Group) to 0.13D and 0.20D, respectively, and the mean refractive cylinders were corrected from 0.92D and 2.60D to 0.42D and 0.27D, respectively, at six months postoperatively. The myopias of these two groups and the astigmatism of the Toric ICL group were effectively corrected. The uncorrected visual acuity (UCVA) of the two groups were 1.02 and 1.05, respectively, at six months postoperatively. The safety index, efficacy index, predictability, and stability were favorable. There were no significant differences between the two groups in terms of postoperative UCVA, intraocular pressure(IOP), vaulting, noticeable complications, or patient satisfaction. CONCLUSIONS: The results show ICL implantation is effective treatment for high myopia, and Toric ICL implantation is a viable surgical option for the treatment of compound myopia astigmatism. Selection of proper phakic intraocular lens(IOL) is recommended for correcting astigmatism.
Astigmatism ; Eye ; Humans ; Intraocular Pressure ; Lenses, Intraocular ; Myopia ; Patient Satisfaction ; Retrospective Studies ; Visual Acuity

This study was aimed to furnish the data of facial bone fracture which was related regional and social environment and to aid diagnosis and treatment of the fracture. This is the retrospective and clinicostatical study on 625 patients with facial bone fracture. The patients were treated in the Dept. of Oral and Maxillofacial Surgery of Wonkwang University Hospital from Jan. 1, 1993 to Dec. 31, 1997. The result were as follows : The facial bone fractures occured most frequently in the twenties(32.3%) and male were predominent(77.4%) than female. The most frequent etiologic factor of facial bone fracture was fall down(42.8%) and midface fracture was traffic accident(63.4%). The most common site of fracture was symphysis(51.1%) and angle(29.7%), condyle(27.5%), ZMC(13.4%) were next in order of frequency. Of the 626 patients, 590 patients(89.5%) were treated with open reduction and only 36 patients(10.5%) were treated with closed reduction. In the blow, the ratio of angle fracture(50%) is especially high(the overall ratio 29.7%) and in the Out car TA, the ratio of ZMC fracture(34.6%) is especially high(the overall ratio 13.4%). In the fall-down, the ratio of symphysis(58.4%) and condyle fracture(33.6%) is especially high(the overall ratio 51.1%, 27.5%). Postoperatives complication were found in 35(5.6%) of 626 patients, in which mouth opening limitation(3%) was the most common. Above results suggest that early diagnosis and treatment of fracture site, systemic condition and associated injuries are nessary, and cooperative treatment with medical department should be performed.
Diagnosis ; Early Diagnosis ; Facial Bones* ; Female ; Humans ; Male ; Mouth ; Retrospective Studies ; Social Environment ; Surgery, Oral

OBJECTIVE: The aim of this study was to investigate the changes in the center of resistance of the maxillary teeth in relation to alveolar bone loss. METHODS: A finite element model, which included the upper dentition and periodontal ligament, was designed according to the amount of bone loss (0 mm, 2 mm, 4 mm). The teeth in each group were fixed with buccal and lingual arch wires and splint wires. Retraction and intrusion forces of 200 g for 4 and 6 anterior teeth groups and 400 g for the full dentition group were applied. RESULTS: The centers of resistance were at 13.5 mm, 14.5 mm, 15 mm apical and 12 mm, 12 mm, 12.5 mm posterior in the 4 incisor group; 13.5 mm, 14.5 mm, 15 mm apical and 14 mm, 14 mm, 14.5 mm posterior in the 6 anterior teeth group; and 11 mm, 13 mm, 14.5 mm apical and 26.5 mm, 27 mm, 25.5 mm posterior in the full dentition group respectively according to 0 mm, 2 mm, 4 mm bone loss. CONCLUSIONS: The center of resistance shifted apically and posteriorly as alveolar bone loss increased in 4 and 6 anterior teeth groups. However, in the full dentition group, the center of resistance shifted apically and anteriorly in the 4 mm bone loss model.
Alveolar Bone Loss ; Dentition ; Finite Element Analysis ; Incisor ; Periodontal Ligament ; Splints ; Tooth

BACKGROUND/AIMS: Portal hypertension in cirrhosis is associated with a hyperdynamic circulation, which is characterized by hypervolemia, high cardiac output, arterial hypotension and low peripheral vascular resistance. These circulatory abnormalities are thought to be secondary to a splanchnic arteriolar vasodilation related to the increase in portal pressure. Studies assessing regional hemodynamics in patients of cirrhosis with ascites have shown vasoconstriction in the renal circulation and in peripheral vascular territory. This study was designed to assess the cerebral vascular resistance in cirrhotic patients with ascites. METHODS: The resistive index in the middle cerebral artery and in a renal interlobar artery were measured by Doppler ultrasonography in 12 cirrhotic subjects without ascites, 23 cirrhotic subjects with ascites, and 8 healthy subjects. The arterial blood pressure and plasma renin and norepinephrine concentration, which reflect the activity of the renin-ngiotensin and sympathetic nervous systems respectively, were also measured. RESULTS: The resistive index in the middle cerebral artery were significantly higher in cirrhotic patients with ascites (0.58 +/- 0.04, mean +/- standard deviation) than in cirrhotic patients without ascites (0.53 +/- 0.02, p<0.01) and in control subjects (0.50 +/- 0.05, p<0.01). The resistive index in the middle cerebral artery showed direct correlation with renal resistive index (r = 0.52, p<0.01), plasma renin activity (r = 0.44, p<0.01) and norepinephrine (r = 0.33, p<0.05). The resistive index in the middle cerebral artery showed an inverse correlation with mean arterial pressure (r = -.59, p<0.01). CONCLUSION: The results suggest that in patients of cirrhosis with ascites, independent of the amount of ascites, there is a cerebral vasoconstriction which is related with the arterial hypotension and the overactivity of vasoconstrictor systems.
Arterial Pressure ; Arteries ; Ascites* ; Cardiac Output, High ; Fibrosis ; Hemodynamics ; Humans ; Hypertension, Portal ; Hypotension ; Liver Cirrhosis* ; Liver* ; Middle Cerebral Artery ; Norepinephrine ; Plasma ; Portal Pressure ; Renal Circulation ; Renin ; Sympathetic Nervous System ; Ultrasonography, Doppler ; Vascular Resistance ; Vasoconstriction ; Vasodilation

Facial hyperhidrosis has a symptom of excessive sweating on the face with or without underlying disease. It can be surgically treated by video-assisted thoracic surgery (VATS). We encountered three cases of facial hyperhidrosis which we treated by VATS, which was performed by resection of the lower third of stellate ganglion and T2-T3 sympathetic ganglia with chains. Postoperative symptom was improved in all cases. There were no postoperative complications such as Horner's syndrome or postsympathectomy neuralgia.
Ganglia, Sympathetic ; Horner Syndrome ; Hyperhidrosis* ; Neuralgia ; Postoperative Complications ; Stellate Ganglion ; Sweat ; Sweating ; Sympathectomy* ; Sympathetic Nervous System ; Thoracic Surgery, Video-Assisted

PURPOSE: The purpose of this study was to analyze the current literatures and to assess outcomes of implant treatment in patients with generalized aggressive periodontitis. MATERIALS AND METHODS: Studies considered for inclusion were searched in Pub-Med. The literature search for studies published in English between 2000 and 2012 was performed. Our findings included literature assessing implant treatment in patients with a history of generalized aggressive periodontitis (GAP). All studies were screened according to inclusion criteria. The outcome measures were survival rate of superstructures, marginal bone loss around implant and survival rate of implants. All studies were divided into two follow-up period: short term study (< 5 years) and long term study (> or = 5 years). RESULTS: Seven prospective studies were selected, including four short-term and three long-term studies. The survival rates of the superstructures were generally high in patients with GAP, i.e. 95.9 - 100%. Marginal bone loss around implant in patients with GAP as compared with implants in patients with chronic periodontitis or periodontally healthy patients was not significantly greater in short term studies but was significantly greater in long term studies. In short term studies, the survival rates of implants were between 97.4% and 100% in patients with GAP-associated tooth loss, except one study. The survival rates of implants were between 83.3% and 96% in patients with GAP in long term studies. CONCLUSION: Implant treatment in patients with GAP is not contraindicated provided that adequate infection control and an individualized maintenance program are assured.
Aggressive Periodontitis ; Chronic Periodontitis ; Dental Implantation ; Dental Implants ; Follow-Up Studies ; Humans ; Infection Control ; Outcome Assessment (Health Care) ; Survival Rate ; Tooth Loss