Techniques that support dental fixation of the maxilla.
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Bone Wires↗
Biomedical subjects
N J Betts
Publications and source records attributed to N J Betts.
Changes in the nasal and labial soft tissues after surgical repositioning of the maxilla.
Accurate prediction of postsurgical function and esthetics of the nose and upper lip requires an understanding of the relationship between maxillary surgical movement and soft tissue change. Thirty-two patients underwent Le Fort I osteotomies, some with concomitant mandibular procedures. Preoperative, postoperative, and 1-year postsurgical data derived from cephalometric and nasolabial cast analysis were compared to assess skeletodental changes, soft tissue changes, and stability. A multiple stepwise regression (including age, gender, alar cinch suture, V-Y closure, and contouring of the anterior nasal spine as variables) indicated that accurate prediction equations could be formulated, particularly if the patients were grouped by vector-specific maxillary movements. In general, the base of the nose widened in all patients regardless of the vector of surgical maxillary movement. An associated shortening of the nose was found. The nasolabial angle decreased or remained constant in most patients. The upper lip widened and lengthened at the philtral columns. Narrow noses widened more than did broad noses and alar cinch suturing widened the alar base even more. Results indicated that soft tissue changes associated with maxillary surgery may be more affected by the position of the soft tissue incision and methods used in closure than by the surgically induced hard tissue change.
Adolescent↗
The transmandibular implant: implant reconstruction and rehabilitation for the atrophic mandible.
The transmandibular implant is specifically designed for the reconstruction and rehabilitation of the severely atrophic mandible utilizing an extraoral approach. The unique design and surgical protocol of the transmandibular system have proven to be predictable and successful. The indications, implant design and materials, surgical technique, advantages, and disadvantages of the transmandibular system are presented in this article.
Alveolar Bone Loss↗
Compromise and control of the airway.
Compromise of the airway is a preventable cause of patient death and is of vital concern to the dental professional. The dentist may encounter airway compromise and must be able to render appropriate care. Unfortunately, this important topic has received little or no attention in the dental literature during the last 5 years. The purpose of this article is to review the etiology of airway compromise, the basic principles of airway management, and the indications for more advanced airway intervention, including intubation and emergency surgical approaches.
Airway Obstruction↗
Intimal hyperplasia in arterial autogenous vein grafts: a new animal model.
A new animal model is presented, in which the changes in arterial autogenous vein grafts in rabbits can be studied. Intimal hyperplasia has developed four weeks after grafting. The thickness of the intima has been measured at this time. The potential uses of the model are discussed.
Animals↗