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The hippocampus mediates associative learning involving spatial and temporal information. Specifically, paired associations in which a trace interval separates the elements appear to be associated within CA1. In contrast, CA3 appears to be involved in associations containing spatial elements. This suggests that CA3, but not CA1, is involved as long as the(More)
Bupivacaine hydrochloride, an amide-type of long-acting local anesthetic was compared with lidocaine hydrochloride to determine its analgesic efficacy and its cost-effective use in an oral and maxillofacial surgery private practice. The results show that 0.5% bupivacaine hydrochloride provides greater analgesia than 2% lidocaine, with an insignificant cost(More)
In human beings, the viral origin of condylomatous lesions of the mouth and cervix, multiple papillomas, and verruca vulgaris of the larynx has been established. The viral origin of papillomatosis in rabbits and dogs has also been documented. The literature, however, shows no conclusive evidence of a viral origin of human oral squamous cell papillomas(More)
A technique for augmentation of the severely atrophic edentulous maxilla is presented. This technique combines the mobilization of the available soft tissue of the labial vestibule with a subperiosteal reflection and "filleting" of the redundant crestal soft tissue to create ample space to accommodate the insertion of the desired amount of hydroxylapatite.(More)
  • Trent Welch
  • Journal of oral and maxillofacial surgery…
  • 1989
Postoperative stability of the skeletal segments repositioned during orthognathic surgery continues to challenge even the most experienced surgeons. In an attempt to establish a consensus about the direction of postsurgical movement and the methods used to prevent relapse, studies from the last 33 years were reviewed. These studies are grouped as isolated(More)
The purpose of this investigation was to determine the overlapping and unique contributions that radiographic techniques might provide for accurate characterization of hard palate fistulas associated with cleft palate. Five subjects with oronasal fistulas were selected for radiographic imaging, and their informed consent was obtained. Results indicated that(More)
This study reviews the treatment outcome of 204 fractures in 131 patients over a 33-month period. In the total group, an infection rate of 4.4% was experienced, which is comparable with other reports. However, in complaint patients immobilized within 72 hours of injury, there was a 0% incidence of bone infection in 111 fractures treated by closed reduction(More)
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