ISSN : 0376-4672
Cystic lesions in pediatric jaws can cause eruption disorders by displacing the erupting permanent teeth, and in the case of secondary infection, can cause swelling and pain. The treatment modalities for such cysts include cyst enucleation, mar supialization, and decompression. As compared to enucleation, decompression has the advantage of preventing damage to surrounding tissues and inducing spontaneous eruption of permanent teeth. We report a case where decompression was performed using a stent designed for decompression and as a space maintainer in three patients with eruption disorder due to cystic lesion of the jaw. The eruption of the displaced permanent teeth was successfully induced by maintaining the eruption space and removing the cyst.
Objective: The aim of this study was to measure the amount of mercury vapor from one pre-capsulated dental amalgam ac cording to the storage temperature and to investigate whether the storage temperature suggested by the manufacturer or ISO is appropriate for the storage. Materials and Methods: GK Amalgam and Ultracaps+ were used in this study. One pre-capsulated dental amalgam was placed in a Tedlar Bag and the Tedlar Bag was filled with 2 L of (4±2) ℃ air. The Tedler Bag was stored at one of the three different temperature conditions; (4±2) ℃, (23±2) ℃ and (30±2) ℃ for 24 hours. By applying Ontario hydro method, mercury vapor in the Tedlar Bag was oxidized in KMnO4-H2SO4 solvent and pre-treated, followed by analyses using the Cold Vapor Atomic Absorption Spectrophotometry. Five measurements were obtained from each group. Results: The average mercury vapor from GK Amalgam was (0.068±0.024), (0.300±0.100) and (0.544±0.133) mg/m3 , and Ul tracaps+ was (0.026±0.008), (0.088±0.013) and (0.146±0.023) mg/m3 at (4±2) ℃, (23±2) ℃ and (30±2), respectively. There was a significant difference between GK Amalgam and Ultracaps+ at each temperature, and depending on the storage temperature in each material (p<0.05). Conclusions: It was evident that storage at (23±2) ℃ result in exposure of mercury vapor exceeding 340 to 1,170% of the expo sure amount compare to the standard set by the Ministry of Labor in Korea. In order to reduce the amount of mercury vapor leaking from pre-capsulated dental amalgam, it is considered an effective method for users to periodically ventilate storage places, store them in refrigerators or keepin sealed container, and manufacturers to produce them in individual packaging.
There are two major trends in pediatric dentistry recently. One is the declining treatment of traditional dental caries, and the second is the growing interest in prevention. Therefore, there is a need for a change in the treatment method of pediatric dentistry until now. In Japan, which experienced such social change before Korea, in 2018, the diagnosis and insurance items were added as ‘Children's Oral Dysfunction'. It is based on baby dentistry, which manages the oral health of young children. Baby dentistry is for infants up to 18 months, including newborns. The main content contains the premise, way of thinking, and specific contents of baby dentistry. This article is based on the recently published books of 'Early Treatment' and 'Baby Dentistry', and I recommend that you refer to the book for more details.
The most common malocclusion presented during primary dentition are anterior crossbite and deep overbite. If the primary dentition does not show severe skeletal discrepancy, it is possible to treat malocclusion using pre-fabricated myofunctional appliance that is easily applied to children. By improving the malocclusion in the primary dentition, normalization of the oral muscle function can be induced. In addition, the normal occlusion of the primary incisor region and ideal position of the lips can make a desirable occlusal relationship at the transition of incisors. If factors such as growth pattern, patient cooperation, and post-treatment maintenance are carefully judged and implemented, the interceptive treatment of primary dentition can contribute to normal growth and development.
Dental traumatic injury is very common in children and adolescent, with the prevalence of 22.7% in primary teeth and 18.1% in 12-year-old children. It compromises esthetics and function, and can affect negatively on oral health-related quality of life in growing children and adolescent. Efforts should be made to restore normal condition and to minimize the psychological impacts of young patients and caregivers while treating dental trauma in emergency situations. Possible damage of permanent successors needs to be considered in primary dentition. For immature permanent teeth, it is necessary to make an effort to preserve the pulp vitality so that continuous root development can take place.
