A new endodontic obturation technique.
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Glass Ionomer Cements↗
Biomedical subjects
Kenneth Koch
Publications and source records attributed to Kenneth Koch.
Endodontic synchronicity.
This article examines a new rotary technique in endodontic instrumentation and stresses the importance of adhering to basic principles. Straight line access and its clinical implication to endodontic success is reviewed. A new system of nickel titanium rotary instruments that uses a reamer design (EndoSequence) is introduced and its associated design features are thoroughly discussed. A step-by-step description of the clinical application of this new methodology is presented.
Dental Instruments↗
The EndoSequence file: a guide to clinical use.
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Dental Alloys↗
Gastric electrical stimulation for medically refractory gastroparesis.
BACKGROUND & AIMS: This study investigated the efficacy of gastric electrical stimulation for the treatment of symptomatic gastroparesis unresponsive to standard medical therapy. METHODS: Thirty-three patients with chronic gastroparesis (17 diabetic and 16 idiopathic) received continuous high-frequency/low-energy gastric electrical stimulation via electrodes in the muscle wall of the antrum connected to a neurostimulator in an abdominal wall pocket. After implantation, patients were randomized in a double-blind crossover design to stimulation ON or OFF for 1-month periods. The blind was then broken, and all patients were programmed to stimulation ON and evaluated at 6 and 12 months. Outcome measures were vomiting frequency, preference for ON or OFF, upper gastrointestinal tract symptoms, quality of life, gastric emptying, and adverse events. RESULTS: In the double-blind portion of the study, self-reported vomiting frequency was significantly reduced in the ON vs. OFF period (P < 0.05) and this symptomatic improvement was consistent with the significant patient preference (P < 0.05) for the ON vs. OFF period determined before breaking the blind. In the unblinded portion of the study, vomiting frequency decreased significantly (P < 0.05) at 6 and 12 months. Scores for symptom severity and quality of life significantly improved (P < 0.05) at 6 and 12 months, whereas gastric emptying was only modestly accelerated. Five patients had their gastric electrical stimulation system explanted or revised because of infection or other complications. CONCLUSIONS: High-frequency/low-energy gastric electrical stimulation significantly decreased vomiting frequency and gastrointestinal symptoms and improved quality of life in patients with severe gastroparesis.
Adult↗
Characteristics of upper abdominal pain in those with chronic liver disease.
Chronic hepatitis has many causes. Symptoms include upper abdominal pain. To allow for a better understanding of this pain we compare HCV patients with other liver diseases and normal controls on their reporting of pain over one month and describe associations. A cross-sectional, case control study was performed. Three groups are studied: (1) normal individuals (NC) (N = 64), (2) patients with chronic liver diseases other than HCV (LD) (N = 53), and (3) HCV infection (N = 64). A dyspepsia questionnaire was utilized, which inquired about a one-month symptom presence of upper abdominal pain and associated symptoms. There was a one-month period prevalence of upper abdominal pain of 45.3% in the HCV group vs 32% in the LD and 20.3% in the NC groups (P = 0.01). The LD (22.6%) and HCV (26.6%) groups had markedly more pain that was worsened by eating compared with NC (1.6%) (P = .003). On univariate analysis, when comparing those with upper abdominal pain to those without, there was a lower age (41.3 vs 44.5), a higher BMI (30.3 vs 26), and more symptoms of fatigue, bloating, and pain worsened by eating and early satiety. On multivariate analysis, age < 50 (OR 5.1; CI 1.5-17), BMI > 30 (OR 4.1; CI 1.5-10.9), nausea (OR 4.1; CI 1.6-10.4), and pain with eating (OR 30: CI 6.7-133) predicted upper abdominal pain. In conclusion, upper abdominal pain is more commonly reported over one month in those with chronic liver diseases. That the abdominal pain worsened after meals in liver patients but not in the normal subjects was a surprise. Possible explanations for this finding are offered.
Abdominal Pain↗