ABSTRACT
Thyrotoxic periodic paralysis (TPP) is a rare disease of muscle paralysis associated with hypokalemia and thyrotoxicosis. Hypokalemic periodic paralysis can be caused by potassium channelopathy or thyroid dysfunction. Thyrotoxic hypokalemic periodic paralysis is far more common in Asian males aged between 20 to 40 years and rare in children and adolescents. Clinical symptoms with motor paralysis were recovered just after treatment of potassium, propranolol, and methimazole. However, thyroid function tests were not normalized until 3 month treatment of methimazole and propranolol. We report a 17-year-old patient diagnosed with Graves' disease with TPP. Thyroid function test should including in periodic paralysis patient's evaluation.
Subject(s)
Adolescent , Aged , Child , Humans , Male , Asian People , Channelopathies , Graves Disease , Hyperthyroidism , Hypokalemia , Hypokalemic Periodic Paralysis , Methimazole , Muscles , Paralysis , Potassium , Propranolol , Rare Diseases , Thyroid Function Tests , Thyroid Gland , ThyrotoxicosisABSTRACT
The objectiveness of this study was to evaluate whether low-viscosity composite can bond effectively to dentin surface without bonding resin. The low-viscosity composites being 50wt% filler content were made by the inclusion of bonding resin of two self-etching systems(Clearfil SE Bond, Unifil Bond) varied with contents as 0, 10, 20, 30, 40, 50wt%. Exposed dentin surfaces of extracted 3rd molars are used. Dentin bond strengths were measured. The tests were carried out with a micro-shear device placed testing machine at a CHS of 1mm/min after a low-viscosity composite was filled into an iris cut from micro tygon tubing with internal diameter approximately 0.8mm and height of 1.0mm. 1. Flexural strength and modulus was increased with the addition of bonding resin. 2. Micro-shear bond strength to dentin was improved according to content of bonding resin irrespective of applying or not bonding resin in bonding procedure, and that of Clearfil SE Bond groups was higher than Unifil Bond. 3. There were no significant difference whether use of each bonding resin in bonding procedure for S-40, S-50, U-50(p>0.05). 4. In SEM examination, resin was well infiltrated into dentin after primed with self-etching primer only for S-50 and U-50 in spite of the formation of thinner hybrid layer. Low viscosity composite including some functional monomer may be used as dentin bonding resin without an intermediary bonding agent. It makes a simplified bonding procedure and foresees the possibility of self-adhesive restorative material.