Shear bond strength between universal adhesives with various pH and dual-cured resin cements / 대한치과재료학회지

The purpose of this study is to evaluate the compatibility of universal adhesives with two dual-cured resin cements. Eighty human molars were divided into eight groups. Tooth was embedded in self-curing acrylic resin and sectioned horizontally to exposure dentine surface. After polishing with 600-grit SiC paper, adhesives were applied. All-Bond Universal (Bisco), G-premio bond (GC), Scotch-bond universal (3M ESPE), Scotch-bond Multipurpose (3M ESPE) were used in this study. Calibra (Dentsply) as a conventional dual-curing resin cement and RelyX Ultimate (3M ESPE) as an amine free resin cement were used. The adhesives and the cements were applied according to the manufacturer's instructions. Final specimens were cylinder (diameter 2mm, height 3mm) shape. After storing in distilled water at 37℃ for 7 days the shear bond strength (SBS) test was performed. There was no significant difference in shear bond strength between the adhesives when RelyX Ultimate was used (p>0.05). However, when Calibra used with Scotch-bond Multipurpose and All-Bond Universal were used, statistically higher SBS was observed, as compared to the groups which Calibra cements with G-premio bond and Scotch-bond universal adhesive (p < 0.05) were used. Within the limitations of this study, RelyX Ultimate resin cement was compatible with universal adhesives of various pH. All-Bond Universal adhesive was compatible with a resin cement containing the tertiary amine.

VATER Syndrome: A Case Report

VATER syndrome is defined as the combinations of three or more of the followings; Vertebral defect, Anal atresia, Esophageal atresia and/or Tracheo-Esophageal fistula, Renal dysplasia, and Radial-ray limb anomalies. A 21-month old female patient was admitted. She had the history of anastomosis of trcheo-esophageal fistula, V-P shunt operation due to hydrocephalus, and spina bifida. Upon admission, physical examinations showed increased deep tendon reflexes of all four extremities with grade 1 spasticity and popliteal angle being 45 degrees, bilaterally. The overall development of the patient was delayed. The imaging study showed hydrocephalus, periventricular leukomalatic change, underdevelopment of the cerebral cortex, atrophy of corpus callosum, Arnold-Chiary malformation, a vascular malformation along the intradural space from lower cervical to nearly entire thoracic vertebral level, multiple vertebral anomalies, and the fusion of multiple ribs. Furthermore hydronephrosis of the left kidney was detected. Follow-up of natural history and management of the patient is needed.

Parkinson's Syndrome Caused by Organophosphate Intoxication: A case report

Organophosphate intoxication causing the extrapyramidal symptom is not frequent. A case of Parkinson's syndrome caused by organophosphate intoxication was observed, of which is reported with the quantitative measurement of tremor using Tri-axial accelerometry. A fifty nine year-old male was admitted to Wonju Christian Hospital after the intake of organophosphate for the purpose of suicide and three days after the accident, involuntary movements were detected. The encephalography and MRI showed no abnormality. With Tri-axial accelerometry, we detected less than 4 Hz resting tremor. The tremor did not response to L-dopa, and in the follow up examination performed 149 days after the accident, an increase in amplitude was detected. Gait disturbance and dysarticulation became more severe. In a case of the organophosphate intoxication patient, very rare Parkinson's syndrome findings were detected, and the tremor during the resting period was measured quantitatively by electromyography and Tri-axial accelerometry.

The Comparison of Hallux Valgus Angles between Plain Radiography and Footprint Test

OBJECTIVE: To find out whether the footprint test was significant as a screening test in hallux valgus (HV) patients. METHOD: The standing AP radiography and the static footprint were performed on 26 general patients, 52 feet total, ranging in age from 15~70 years. As markers of the footprint test, the angles that we want to measure were designated as H and H' angles. RESULTS: The HV angle on plain radiography correlated significantly to the H angle of the footprint test (r=0.75), and presented as HV angle=1.012H+2.723. The HV angle on plain radiography inversely correlated significantly to the H' angle (r=-0.56) and presented as HV angle=-0.731H' +90.953. CONCLUSION: The footprint test could be used as a screening test for hallux valgus prior to plain radiography. HV angle in standing AP radiograph could be predicted by measuring the H and H' angle on the static footprint. Supplement studies on variable factors such as age, gender, etc. are required for further study.

Attenuation of Self-biting in Spinal Cord Injury by Functional Upper Extremity Surgery and Gabapentin Administration: A case report

The prevalence of self-mutilation behavior after spinal cord injury is not known. However, self-biting of fingers after spinal cord injury is a rare phenomenon. We report a case of 51-year-old man self-biting of fingers, resulting in multiple finger amputation following C5 complete spinal cord injury. We believe this to be the first Korean report of multiple finger amputation due to self-biting following spinal cord injury. The mutilative self-biting was related to depression and central pain of upper extremity. After operation for tendon transfer of brachioradialis to extensor carpi radialis brevis, his feeding skills and driving skills on electric-powered wheelchair had been improved, and then, his self-biting of fingers had been diminished. The patient has been temperate in self-biting behavior after administration of gabapentin. In our case, functional improvement of upper extremity by functional surgery and central pain relief by gabapentin provided attenuation of mutilative self-biting behavior.