• Journal of Dental Anesthesia and Pain Medicine
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• v.15 no.4
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• pp.251-255
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• 2015

Prader-Willi syndrome (PWS) is a rare genetic disorder reported rarely in dentistry. Dental practitioners should know the features of PWS because affected patients have a variety of dental symptoms. The current report describes a case of PWS. An 18-year-old male patient presented with traumatic injuries. Initial emergency treatments were performed under sedation, and further treatments were conducted under general anesthesia. After adequate healing, periodic follow-up and dietary management according to the patient's age and nutritional phase were recommended. Dental management of PWS patients consists of active preventive measures in addition to dietary consultation according to age and nutritional phase.

• Journal of Dental Anesthesia and Pain Medicine
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• v.18 no.2
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• pp.71-78
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• 2018

The first clinical application of nitrous oxide ($N_2O$) was in 1844, by an American dentist named Horace Wells who used it to control pain during tooth extraction. Since then, $N_2O$ has shared a 170-year history with modern dental anesthesia. $N_2O$, an odorless and colorless gas, is very appealing as a sedative owing to its anxiolytic, analgesic, and amnestic properties, rapid onset and recovery, and, in particular, needle-free application. Numerous studies have reported that $N_2O$ can be used safely and effectively as a procedural sedation and analgesia (PSA) agent. However, $N_2O$ can lead to the irreversible inactivation of vitamin B12, which is essential for humans; although rare, this can be fatal in some patients.

• Journal of the korean academy of Pediatric Dentistry
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• v.43 no.1
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• pp.109-116
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• 2016

Sedation is an indispensable part of contemporary pediatric dentistry. The Korean Academy of Pediatric Dentistry (KAPD) organized the dental sedation committee to help members perform safer and more effective sedation. The committee surveyed 111 members who practice dental sedation to figure out the present state of sedation in 2014. According to the survey, 86% of the respondents indicated that they were interested in continuing education of sedation. The most interesting topic was sedation related emergency management, followed by safe dosages of sedative drugs. However, it is not realistic to establish the recommended dosages as a guideline since the selection of agents and dosages depend on various factors. In order to provide successful sedation, pediatric dentist should make an individual sedation plan for each procedure. It is important to understand not only the properties of each sedative, but also interactions with other drugs. This article reviews useful information of commonly used agents for dental sedation and summarizes the recommended dosages from the Physicians' Desk Reference (PDR) and some famous pediatric dentistry textbooks.

• Journal of The Korean Dental Society of Anesthesiology
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• v.2 no.1 s.2
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• pp.1-6
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• 2002

The usage of nitrous oxide is increased for the anxious patient to dental treatment. There are two methods to induce the sedation during dental treatment. One is sedation with drugs the other no need of drugs. We discussed here about sedation with drugs. The methods of drug administration are oral, intramuscular, intravenous, inhalation. The method of oral administration of drugs are convenient to patient and doctor but poor controllability. Intramuscular method is a parenteral technique that maintains several advantages over the enteral technique. However its pales in comparison to other parenteral technique. Intravenous method represents most effective method of ensuring predictable and adequate sedation in all patients. But it has inability to reverse the action of drugs after they have been injected except some drugs (e.g., narcotics and benzodiazepine). A variety of gaseous agents may be administered by inhalation to produce sedation. In dental practice, the inhalation administration of gas means use of nitrous oxide. There are many advantages of nitrous oxide administration. First, very short latent period and rapid onset of drug action which lead to possible titration of drug concentration. With nitrous oxide, clinical effects may become noticeable as quickly as 15 to 30 seconds after inhalation. Recovery from inhalation sedation is also quite rapid. In out patient dental practice rapid recovery is very important because it permit to discharge the patient without escort and the patient return to their ordinary life without limit. To success the conscious sedation with nitrous oxide, the administrator should be keep the mind that always titration of nitrous oxide concentration during induction and treatment. Careful observation need during treatment to prevent oversedation because the adequate nitrous oxide concentration to patients changed by environmental stress. Always begins with 100% oxygen and ends with 100% oxygen to prevent diffusion hypoxia which rare in clinical practice.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.34 no.6
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• pp.449-454
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• 2012

Purpose: Intravenous sedation with midazolam is common in contemporary dentistry. That is effective for anxious patients, but additional analgesic agent needs to be used, because midazolam alone doesn't have an analgesic effect. This study was performed to select an analgesic agent between an opioid agent, and nonsteroidal anti-inflammatory drugs as adjunctives in intravenous sedation with midazolam. Methods: The subjects were 60 patients who visited the Department of Oral and Maxillofacial Surgery, Sacred Heart Hospital, Hallym University, between August 2009 and February 2010. Conscious sedation was performed on 20 patients of 3 groups (control group, ketorolac group, and fentanyl group), who were divided randomly. The analgesic agent was administrated preoperatively. For sedation, vital signs were recorded. After sedation and operation, subjective questionnaires of the patient and operator were implemented. Results: All of the $SPO_2$, blood pressure, and heart rates stayed within the normal range for sedation. The sedation depth and analgesic effect of the ketorolac group and fentanyl group were similar. In the case of sedation depth, 12 patients in the ketorolac group and 14 patients in the fentanyl group had no memory of surgery. In the case of analgesic effect, the visual analogue scale of pain scored 2~3 in 13 patients in the ketorolac group, and 0~2 in 12 patients in the fentanyl group. The satisfaction of patients and doctors was also similar. Conclusion: Considering the management and complication of an opioid agent, non-steroidal anti-inflammatory drugs is more effective than an opioid agent.

• Journal of the korean academy of Pediatric Dentistry
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• v.37 no.2
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• pp.213-217
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• 2010

The use of chloral hydrate and hydroxyzine for oral sedation is most effective in children aged less than 36 months and weighing less than 15 kg. Children who do not belong to this category may show frequent movements due to shallow sedation level, and it can lead to sedation failures. One of the solutions to such sedation failure is conversion to deeper sedation. But, it is not so much of an option, since inhalation anesthetics and devices are required. In this case, conversion from oral sedation to intravenous sedation was successfully achieved without causing injection pain while searching for an intravenous route, by using EMLA cream (Eutectic Mixture of Local Anesthesia). A patient aged 46 months and weighing 15 kg visited the Pediatric Department of Dankook University Dental Hospital. Treatment under TSD(Tell Show Do) was offered, but due to the parent's request, oral sedative measures were taken. Considering prompt converting from oral sedation to iv sedation in case the oral sedation fails, EMLA cream was apllied preemptively. Adequate sedation level could not be achieved after 90 minutes of oral administration, therefore, under the parent's consent, intravenous route was prepared after conscious sedation by $N_2O-O_2$. During treatment, $ETCO_2$, $SPO_2$ and heart rate was monitored every 5 minutes. The patient showed stable vital signs and did not show any movements. The whole procedure took two and a half hours in total, and the treatment was completed without any adverse effects.

• Archives of Plastic Surgery
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• v.41 no.1
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• pp.40-44
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• 2014

Background Chloral hydrate (CH) is the primary agent most commonly used for pediatric sedation prior to diagnostic, therapeutic procedures. In the management of pediatric facial laceration, the initial dose of CH has to balance the need for adequate sedation against the need to minimize sedative complications. Methods A retrospective review of medical records of 834 children who visited our emergency room for facial lacerations from August 2010 to September 2012 was conducted. They were divided into six groups on the basis of the initial dose of CH administered. Further, each group was compared with the standard group (70 to ${\leq}80mg/kg$) with respect to sedation success, augmentation dose, failed sedation, time to procedure, and time of stay. Results With respect to the complication rate, only group 1 (range, 40 to ${\leq}50mg/kg$) showed a significantly lower complication rate. In the case of all the other variables considered, there were no significant differences among any of the groups. Conclusions An initial CH dose of $48{\pm}2mg/kg$ does not negatively affect the success rate of sedation or the need for additional sedative during the primary closure of facial lacerations in pediatric patients. Further, lower doses reduce the incidences of adverse effects and do not delay procedure readiness. Therefore, $48{\pm}2mg/kg$ of CH can be considered the optimal initial dose for pediatric sedation.

• Tuberculosis and Respiratory Diseases
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• v.73 no.3
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• pp.151-161
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• 2012

Background: Adequate assessment and control of sedation play crucial roles in the proper performance of mechanical ventilation. Methods: A total of 30 patients with various pulmonary diseases were prospectively enrolled. The study population was randomized into two groups. The sedation assessment group (SAG) received active protocol-based control of sedation, and in the empiric control group (ECG), the sedation levels were empirically adjusted. Subsequently, daily interruption of sedation (DIS) was conducted in the SAG. Results: In the SAG, the dose of midazolam was significantly reduced by control of sedation (day 1, $1.3{\pm}0.5{\mu}g/kg/min$; day 2, $0.9{\pm}0.4{\mu}g/kg/min$; p<0.01), and was significantly lower than the ECG on day 2 (p<0.01). Likewise, on day 2, sedation levels were significantly lower in the SAG than in the ECG. Significant relationship was found between Ramsay sedation scale and Richmond agitation-sedation scale (RASS; $r_s$=-0.57), Ramsay Sedation Scale and Bispectral Index (BIS; $r_s$=0.77), and RASS and BIS ($r_s$=-0.79). In 10 patients, who didn't require re-sedation after DIS, BIS showed the earliest and most significant changes among the sedation scales. Ventilatory parameters showed significant but less prominent changes, and hemodynamic parameters didn't show significant changes. No seriously adverse events ensued after the implementation of DIS. Conclusion: Active assessment and control of sedation significantly reduced the dosage of sedatives in patients receiving mechanical ventilation. DIS, conducted in limited cases, suggested its potential efficacy and tolerability.

• Journal of Dental Anesthesia and Pain Medicine
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• v.18 no.5
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• pp.295-300
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• 2018

Background: Removal of the plate following Le Fort I osteotomy and BSSO (bilateral sagittal split osteotomy) is a common procedure. However, patients who undergo plate removal experience intense pain and discomfort. This study investigated the half-maximal effective concentration ($Ce_{50}$) of remifentanil in the prevention of plate removal pain under sedation using dexmedetomidine. Methods: The study evaluated 18 patients, between 18 and 35 years of age, scheduled for elective surgery. Remifentanil infusion was initiated after sedation using dexmedetomidine, and started at a dose of 1.5 ng/mL on the first patient via target-controlled infusion (TCI). Patients received a loading dose of $1.0{\mu}g/kg$ dexmedetomidine over 10 min, followed by a maintenance dose of $0.7{\mu}g/kg/h$. When the surgeon removed the plate, the patient Modified Observer's Assessment of Alertness/Sedation (MOAA/S) score was observed. Results: The Ce of remifentanil ranged from 0.9 to 2.1 ng/mL for the patients evaluated. The estimated effect-site concentrations of remifentanil associated with a 50% and 95% probability of reaching MOAA/S score of 3 were 1.28 and 2.51 ng/mL, respectively. Conclusion: Plate removal of maxilla can be successfully performed without any pain or adverse effects by using the optimal remifentanil effect-site concentration ($Ce_{50}$, 1.28 ng/mL; $Ce_{95}$, 2.51 ng/mL) combined with sedation using dexmedetomidine.

• Journal of The Korean Dental Society of Anesthesiology
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• v.2 no.2 s.3
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• pp.97-100
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• 2002

Background: Patient-controlled sedation (PCS) has been blown for a safe and effective sedative method on the same pharmacological concepts of patient-controlled analgesia. Many different kinds of infusion devices have been used but they often have too long nominal infusion rate and lockout time. $Perfuser^{\circledR}$ fm (B. Braun, Germany) is a new PCA device with 999.9 ml/hr nominal infusion rate and minimum 1 min lockout time. In this study, the feasibility of propofol PCS using $Perfuser^{\circledR}$ fm was examined in order to provide a safe satisfactory sedation for dental patients. Methods: Eleven healthy patients presenting for oral surgery were studied. Propofol PCS was performed using $Perfuser^{\circledR}$ fm, which was set to deliver a bolus dose of 5 mg with 999.9 ml/hr nominal infusion rate and 1 min lockout time. Propofol loading dose was randomly assigned to a bolus dose ${\times}$ 0, 2, and 3 (initial bolus). Patients were told to press the bolus button as often as they needed to relieve discomfort. Results: Total infused dose of propofol was mean 1.8 mg/kg/hr and D (Delivery)/A (Attempt) ratio was mean 72.8%. All patients was awake and there were no clinically significant intraoperative side effects during the sedation. Almost all patients were very satisfied with this type of PCS. Conclusion: Propofol PCS using $Perfuser^{\circledR}$ fm infusion pump provided good conscious sedation for dental procedures.