A case of poisoning by oral lime sulfur / 中华劳动卫生职业病杂志

Lime sulfur is a common bactericide with strong alkalinity, and is highly corrosive to humans and animals. It is rare for lime sulfur poisoning clinically. This article discusses the clinical manifestations of a patient who was poisoned by oral lime sulfur. After the poisoning, the mucosa of the lips and pharynx broke, fever, and pulmonary inflammation quickly appeared. The pulmonary CT showed slight interstitial changes in both lungs. Through high flow oxygen inhalation, fluid infusion, drainage, maintenance of water and electrolyte balance, protection of important organ functions, and other symptomatic support and treatment, as well as control of blood pressure, blood sugar, maintenance of circulatory function and other targeted measures, the patient's condition gradually improved.

Assessment of velopharyngeal status of postoperative cleft palate patients in silent mode by visual analog scale / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To evaluate the velopharyngeal status of cleft palate patients after operation in silent mode by visual analog scale.</p><p><b>METHODS</b>A total of 82 patients with cleft lip and palate after operation were examined by nasopharyngeal fiber endoscopy with 11 voice samples. The velopharyngeal status was evaluated by three experienced experts using qualitative method and visual analog scale (VAS) method in silent mode. The Spearman correlation relationship was analyzed between VAS value and qualitative grade. The VAS value range of 10 non-nasal consonant voice samples was divided according to qualitative classification.</p><p><b>RESULTS</b>VAS values could accurately reflect the outcome of the qualitative classification. The poorer the velopharyngeal status was, the lower the VAS value, and vice versa. The whole effectiveness of value range was greater than 70%.</p><p><b>CONCLUSIONS</b>VAS values can accurately reflect the outcome of the qualitative classification about velopharyngeal function, and VAS value grading velopharyngeal status is reliable. This study proposed VAS values range standards for different velopharyngeal qualitative classification.</p>

Preliminary study on the reconstruction and analysis of digital maxillary cast of infants with cleft lip and palate / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To reconstruct a digital maxillary cast of infants with cleft lip and palate (CLP) by laser scanning and to provide an analysis method for the edentulous cast of CLP.</p><p><b>METHODS</b>Under general anesthesia, an edentulous cast of one infant with right CLP was made and scanned by laser scanner. Using reverse engineering software, this cast surface was reconstructed.</p><p><b>RESULTS</b>By this method, the digital cast could be observed from each degree and direction, and on this digital cast, the reference landmarks formeasarenment were determined, and the cast was then segmented, measured, and calculated.</p><p><b>CONCLUSIONS</b>The 3-D analysis developed is an ideal tool for the examination of 3-D morphological changes in the edentulous maxilla of patients with CLP. This newly developed analysis enables a quantification of the extent and direction of morphological changes in the maxilla of infants with CLP.</p>

Preliminary study on the comparison and analysis of the digital maxillary alveolar casts / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To develop a three-dimensional (3-D) comparison and measuring techniques to analyze changes in palatal forms of the serial maxillary alveolar cast and to evaluate the significance of the different reference change indexes.</p><p><b>METHODS</b>Following digitizing the casts with a 3-D laser scanner and using reverse engineering software Geomagic Studio 7.0 for a pair of 3-D digital maxillary alveolar cast of an infant of UCLP before and after cheiloplasty, a pair of cast surfaces were reconstructed. The reference points and the character lines were extracted.</p><p><b>RESULTS</b>The model coordinate system and the datum planes were established on the basis of reference points extracted. The newly developed analysis technique completed 3-D comparison of palatal forms of UCLP infants before and after cheiloplasty. Distances and volumes changes between the surfaces were determined and expressed graphically.</p><p><b>CONCLUSIONS</b>With establishing the model coordinate system and the datum plane, it is possible to visualize the comparison outcome of the reference change indexes longitudinally. The various reference change indexes may reflect the trend of the infant maxillary growth.</p>

Surgical management of naso-orbital-ethmoid fractures / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To explore the clinical characteristics of naso-orbital-ethmoid (NOE) fracture, principles and surgical methods.</p><p><b>METHODS</b>Twenty-nine patients with NOE fractures were investigated. Operations for the treatment of NOE and subsequent deformities included reduction of central fragment, reconstruction of orbit walls, reattachment of medial canthal ligament and so on. The outcome of the treatment was evaluated.</p><p><b>RESULTS</b>Three cases were infected postoperatively. Of the 14 cases performed on reconstruction of orbit wall, 9 cases got complete correction for their dystopia/enophthalmos, 5 cases improved. Thirteen cases experiencing canthopexy obtained accepted outcome.</p><p><b>CONCLUSIONS</b>The satisfactory correction of NOE fracture and subsequent enophthalmos/dystopia and telecanthus can be achieved with elective surgery in most cases.</p>

A review of 11 cases of immediate free flap transfer for treating the advanced osteoradionecrosis of mandible / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To assess the effectiveness and reliability of free flap transfer for treating the advanced osteoradionecrosis (ORN) of mandible.</p><p><b>METHODS</b>Eleven cases of free flap transfer for treating the advanced ORN of mandible from October 1999 to February 2003 were reviewed. Data concerning the operation included site, stage and histology of primary tumor, dosage of radiotherapy, defect description, design of free flap, recipient vessel, free flap survival and complications.</p><p><b>RESULTS</b>There were 8 males and 3 females, with age ranged 29-65 years old. Fifteen free flaps were used for reconstructing the defects, 12 were fibula flap, 2 were rectus abdominis myocutaneous flap, and 1 was radial forearm flap. All the free flaps survived completely without partial or total necrosis. The complication rate was 36.4%. All patients had complete resolution of ORN symptoms. No evidence of ORN recurrence was observed in any patient.</p><p><b>CONCLUSION</b>Free flap transfer provides a reliable and effective means for treating the advanced ORN of mandible. Free fibula flap is the workhorse flap for reconstruction of mandible.</p>

Application of the nasal lining flap to correct the wide unilateral complete cleft lip / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To study use of nasal lining flap in correction of the wide complete unilateral cleft lip.</p><p><b>METHODS</b>78 patients with wide complete cleft lip were. operated, firstly to be sure. That the lip length on both sides was equal. Then the nasal lining flap was used to enhance the height of the lip on cleft side for keeping symmetry with the non-cleft side. The rest of procedures was the same as "Millard" method.</p><p><b>RESULTS</b>84.6 percent of patients had good appearance at one and half years after surgery.</p><p><b>CONCLUSIONS</b>It is an effective way to take advantage of the nasal lining flap to correct the wide complete unilateral cleft lip.</p>