OBJECTIVE: The aim of this study was to evaluate the reliability of measurements obtained after the superimposition of three-dimensional (3D) digital models by comparing them with those obtained from lateral cephalometric radiographs and photocopies of plaster models for the evaluation of upper molar distalization. METHODS: Data were collected from plaster models and lateral cephalometric radiographs of 20 Class II patients whose maxillary first molars were distalized with an intraoral distalizer. The posterior movements of the maxillary first molars were evaluated using lateral cephalometric radiographs (group CP), photocopies of plaster models (group PH), and digitized 3D models (group TD). Additionally, distalization and expansion of the other teeth and the degrees of molar rotation were measured in group PH and group TD and compared between the two groups. RESULTS: No significant difference was observed regarding the amount of molar distalization among the three groups. A comparison of the aforementioned parameters between group PH and group TD did not reveal any significant difference. CONCLUSIONS: 3D digital models are reliable to assess the results of upper molar distalization and can be considered a valid alternative to conventional measurement methods.
Humans ; Hydrogen-Ion Concentration ; Molar* ; Tooth

OBJECTIVE: The aim of this study was to evaluate the reliability of measurements obtained after the superimposition of three-dimensional (3D) digital models by comparing them with those obtained from lateral cephalometric radiographs and photocopies of plaster models for the evaluation of upper molar distalization. METHODS: Data were collected from plaster models and lateral cephalometric radiographs of 20 Class II patients whose maxillary first molars were distalized with an intraoral distalizer. The posterior movements of the maxillary first molars were evaluated using lateral cephalometric radiographs (group CP), photocopies of plaster models (group PH), and digitized 3D models (group TD). Additionally, distalization and expansion of the other teeth and the degrees of molar rotation were measured in group PH and group TD and compared between the two groups. RESULTS: No significant difference was observed regarding the amount of molar distalization among the three groups. A comparison of the aforementioned parameters between group PH and group TD did not reveal any significant difference. CONCLUSIONS: 3D digital models are reliable to assess the results of upper molar distalization and can be considered a valid alternative to conventional measurement methods.
Humans ; Hydrogen-Ion Concentration ; Molar* ; Tooth

The case of a severely traumatized pregnant patient, in whom a perimortem cesarean section, in the emergency department, led to the birth of a viable baby, with long-term survivor, is described. A postmortem cesarean section, resulting in fetal survival, performed after 45 minutes of maternal cardiopulmonary resuscitation is reported in a patient with multiple penetrating injuries. A 27-year-old primigravida suffered cardiopulmonary arrest at the 34th week of gestation following multiple knife injuries. Although extensive advanced cardiopulmonary resuscitation was performed for 45 minutes, her vital signs did not return to normal levels. A low segment cesarean delivery was performed, and a female baby was delivered. The time interval between cardiopulmonary arrest and delivery, prior maternal health status, and continued cardiopulmonary resuscitation are important determinants of fetal survival. A perimortem cesarean section is advised in case of multiple penetrating injuries, even after 45 minutes of cardiopulmonary resuscitation, since it may result in fetal salvage.
Adult ; *Cardiopulmonary Resuscitation ; *Cesarean Section ; Fatal Outcome ; Female ; Heart Arrest ; Human ; Infant, Newborn ; Pregnancy ; *Pregnancy Complications ; Pregnancy Outcome ; Wounds, Stab/*complications

BACKGROUND: Although regional anesthesia is the first choice for patients undergoing total knee arthroplasty (TKA), it may not be effective and the risk of complications is greater in patients who are obese or who have spinal deformities. We compared the success of ultrasound-guided femoral and sciatic nerve blocks with sedoanalgesia versus spinal anesthesia in unilateral TKA patients in whom spinal anesthesia was difficult. METHODS: We enrolled 30 patients; 15 for whom spinal anesthesia was expected to be difficult were classified as the block group, and 15 received spinal anesthesia. Regional anesthesia was achieved with bupivacaine 62.5 mg and prilocaine 250 mg to the sciatic nerve, and bupivacaine 37.5 mg and prilocaine 150 mg to the femoral nerve. Bupivacaine 20 mg was administered to induce spinal anesthesia. Hemodynamic parameters, pain and sedation scores, and surgical and patient satisfaction were compared. RESULTS: A sufficient block could not be obtained in three patients in the block group. The arterial pressure was significantly lower in the spinal group (P < 0.001), and the incidence of nausea was higher (P = 0.017) in this group. Saturation and patient satisfaction were lower in the block group (P < 0.028), while the numerical pain score (P < 0.046) and the Ramsay sedation score were higher (P = 0.007). CONCLUSIONS: Ultrasound-guided sciatic and femoral nerve blocks combined with sedoanalgesia were an alternative anesthesia method in selected TKA patients.
Anesthesia ; Anesthesia, Conduction ; Anesthesia, Spinal* ; Arterial Pressure ; Arthroplasty* ; Bupivacaine ; Congenital Abnormalities ; Femoral Nerve ; Hemodynamics ; Humans ; Incidence ; Knee* ; Nausea ; Nerve Block ; Patient Satisfaction ; Prilocaine ; Sciatic Nerve* ; Ultrasonography