Long-term results of vertical height augmentation genioplasty using autogenous iliac bone graft

PURPOSE: In order to clarify the clinical utility of the vertical height augmentation (VHA) genioplasty using autogenous iliac bone graft (IBG), this study examined the postsurgical changes in hard and soft tissues of the chin and the stability of the grafted bone. PATIENTS AND METHODS: Twenty-three patients who had undergone VHA genioplasty using autogenous IBG were evaluated radiographically and clinically. A comparison study of the changes in hard to soft tissues after surgery in all 23 patients was performed with preoperative, 1-month, 3-months, 6-months, and/or 1-year postoperative lateral cephalograms by tracing. Stability, bone healing, and complication of the grafted bone was evaluated by follow-up roentgenograms and clinical observation. RESULTS: Between the preoperative and 6-month postoperative tracings, an average vertical augmentation of the osseous segment was 4.2 mm at menton and that of the soft tissue menton was 4.0 mm. There was a high predictability of 1: 0.94 between the amounts of hard versus soft tissue changes with surgery in the vertical plane. The position of the genial bone segment was stable immediately after surgery and soft tissue was not changed significantly from 1 month to 1 year after operation. Clinical and radiological follow-up results of the iliac bone graft showed normal bony union and were generally stable. CONCLUSIONS: VHA genioplasty using IBG is a reliable method for predicting hard and soft tissue changes and for maintaining postoperative soft tissue of the chin after surgery.

Comparison of clinico-histopathologic findings before and after decompression of odontogenic cyst in the jaw

BACKGROUND: For normalization of displaced anatomical structure by large cyst, two-step procedure (decompression and enucleation afterward) has been recommended. However, the histological transformation after cystotomy for decompression was shown frequently in secondary enucleation. Therefore, analyses about effects and histological changes after decompression have been necessary. METHODS: 48 cases diagnosed as large odontogenic cyst in the jaw and treated by decompression and secondary enucleation were retrospectively analyzed in clinical, rediographical, and histological aspects. RESULTS: In dentigerous cyst, decompression was much useful. Impacted permanent teeth were erupted and reduction rate was higher than that of odontogenic keratocyst (OKC) and apical periodontal cyst. In OKC, among the 29 cases, 11 cases showed no-keratosis, proliferation and rete-ridge elongation after decompression. 4 cases showed no-keratosis, only. 7 cases showed orthokeratosis and rete-ridge elongation and 6 cases showed reteridge elongation, only. 1 case had no change. And the recurrence rate for OKCs was 10.3%. For all odontogenic cysts in this study, dysplasia was not found in cystic lining after decompression. CONCLUSIONS: This study implied that decompression for large odontogenic cyst was useful treatment modality because it was conservative treatment and recurrence rate was low although long treatment period was required.

The characteristics on the dental emergency patients of wonju christian hospital for last 10 years

The appropriate care to the dental emergency patients is much important in the aspect of community dental service. To attain such a purpose, the sacred duty of the training of oral and maxillofacial surgeons is required. So, a retrospective study on the characteristics of dental injuries and diseases in emergency care unit will be very meaningful. This study was carried by reviewing the charts and radiographic films of 3,394 patients, treated for dental emergency at Wonju Christian Hospital, Republic of Korea, from January 1, 1993 to December 31, 2002. All patients were classified to 6 groups including trauma, toothache, infection, hemorrhage, TMJ disorder and the others. The clinical characteristics of diseases and treatment modalities according to each group were analyzed. The trauma (73.9%) was the most frequent cause in dental emergency patients, and acute toothache, odontogenic infection, oral hemorrhage, and TMJ disorder were next in order. Gender prediction was male (68%), there were many patients on May and December in the monthly frequency, and the most frequent age group was from 0 to 9 years. In the trauma group, male (68.6%) was predominant, and soft tissue injuries and primary closures were the most frequent type of injury and treatment. In jaw fractures, traffic accidents were the most cause and the weakest site was mandibular symphysis area, and mandibular angle, condy le, and body area were next in order. In the acute toothache group, the cause was dental pulpitis mostly and treatment for that was drug administration mainly. Buccal space abscess in infection group had the largest incidence (24.5%), and common treatments were incision and drainage and medications. In the hemorrhage group, a major cause was postoperative bleeding (60.3%) and hemostasis was obtained by pressure dressing, curettage and suture. For the TMJ disorder group, the peak incidence (63.8%) was shown in the post-traumatic myofascial pain dysfunction syndrome and its primary care was medication such as analgesics and sedatives. In the other group, the various specific symptoms were complained due to acute sialadenitis, trigeminal neuralgia, acute stomatitis, chemical burn, terminal stage neuritis of head and neck cancer, and foreign body aspiration. In conclusion, for the rapid and proper care of the emergency dental diseases, well-trained education should be presented to the intern and resident course of oral and maxillofacial surgery. And it is demanded that oral and maxillofacial surgeons must be prepared in knowledge and skill for such emergency care.

A comparative clinical study on decompression and enucleation to treat cystic lesions of the jaws

PURPOSE: Among the various surgical methods used for the effective treatment of cystic lesion in the jaws historically, decompression procedure has some of superior prognosis compare to direct enucleation. In order to propose the efficacy of decompression we performed this retrospective study to compare decompression procedure with one-stage enucleation in clinical results and prognosis. PATIENTS AND METHODS: We reviewed 175 patients who had been histopathologically diagnosed cystic lesions from 1996 to 2000 in our department. Patients who had been received decompression alone or secondary enucleation after decompression were 31 cases, and enucleation alone were 144 cases. The age and sex of the patients, the area, size, and histological type of the lesions, and detailed operation and complications including recurrence were investigated. The minimal follow-up period was 2 years. RESULTS: In 31cases of decompression, male patients were 22cases(71%) similar to male predilection(62.3%) in total 175 cases. Cystic lesions were developed evenly in all age groups totally. Decompression was mainly performed in teenagers but enucleation was used in elder decades. In decompression cases the lesions were located in mandibular posterior, maxillary posterior, mandibular anterior, and maxillary anterior in order, which had some differences in total and enucleation cases. In enucleation cases, less than 3cm in size was 77.1% but larger than 3cm was 93.5% in decompression cases. Histopathologically, dentigerous cysts(54.8%), unicystic ameloblastomas(16.1%), and odontogenic keratocysts(12.9%) were seen in decompression cases and no recurrence or metaplasia and infection was observed. On the other hand, permanent tooth loss, numbness, recurrence, and so on were accompanied after enucleation. CONCLUSION: Although decompression procedure has disadvantages such as many of visiting times and slow recovery of the surgical defect, decompression is the best choice of treatment for large cystic lesions of the jaws, because it prevents functional and cosmetic defect, allows bone regeneration, and makes easy secondary enucleation.

Comparison of tramadol/acetaminophen and codeine/acetaminophen/ibuprofen in onset of analgesia and analgesic efficacy for postoperative acute pain

BACKGROUND: Some clinical trials have reported that a new analgesic combination of tramadol and acetaminophen provides good efficacy in various pain models. For the more clinical uses of this agent, comparisons about the onset of analgesia and analgesic efficacy in the acute state of pain with the other drugs known as strong analgesics were needed. PURPOSE: The goal of this study was to compare the times to onset of analgesia and the other analgesic efficacy of 75 mg tramadol/650 mg acetaminophen and 20 mg codeine/500 mg acetaminophen/400 mg ibuprofen in the treatment of acute pain after oral surgery. PATIENTS AND METHODS: Using a randomized, single-dose, parallel-group, single-center, and active-controlled test design, this clinical study compared the times to onset of analgesia using a two-stopwatch technique and the other analgesic efficacy of the single-dose tramadol/ acetaminophen and odeine/acetaminophen/ibuprofen. These were assessed in 128 healthy subjects with pain from oral surgical procedures involving extraction of one or more impacted third molars requiring bone removal. From the time of pain development, the times to onset of perceptible and meaningful pain relief, pain intensity, pain relief, an overall assessment, and adverse events of the study medications were recorded for 6 hours. RESULTS: The demographic distribution and baseline pain data in the two groups were statistically similar. The median times to onset of perceptible pain relief were 21.0 and 24.4 minutes in the tramadol/acetaminophen and codeine/acetaminophen/ibuprofen groups respectively and those to onset of meaningful pain relief were 56.4 and 57.3 minutes, which were statistically similar. The other efficacy variables such as mean total pain relief (TOTPAR) and the sum of pain intensity differences (SPID) were also similar in the early period after pain development and drug dosing. The safety of tramadol/acetaminophen was well tolerated and very comparable to that of codeine/acetaminophen/ibuprofen. CONCLUSIONS: In this acute dental pain model, the onset of analgesia and analgesic efficacy of tramadol/acetaminophen was comparable to that of codeine/acetaminophen/ibuprofen. These results showed that tramadol/acetaminophen was recommendable for fast and effective treatment in the management of postoperative acute pain.

Clinicopathologic study of pleomorphic adenoma in minor salivary glands

Pleomorphic adenoma is the most common salivary neoplasm mainly occurring in the major salivary glands - especially in parotid gland, which is characterized by variable histopathologic appearances and high recurrence rate with malignant transformation according to surgical situations. And this benign mixed tumor occurring in minor salivary glands is believed to shows same clinicopathologic appearances and relatively low recurrent rate compared with the case in major salivary glands. But there are few comparative studies of large series of pleomorphic adenoma occurring in minor salivary glands which includes different histopathologic appearance, clinical characteristics, treatment methods, recurrence rate, and malignant transformation. We retrospectively studied the 54 patients who were pathologically confirmed with pleomorphic adenoma occurring in minor salivary glands, and analyzed the clinico-histopathological appearance, surgical methods, recurrent cases. The results obtained are as follows. 1. The incidence of the tumor was most frequent in 4th & 5th decade, and in female. 2. Palate(90%) including hard & soft palate was the most frequent site for pleomorphic adenoma in minor salivary glands. 3. The exact duration could not be known due to asymptomatic slow growth patterns of the tumor. 4. The mean tumor size was 2.3cm. 5. 28 (52%) pleomorphic adenomas were classified as Cellular type (cell-rich), 17 (31%) specimen as Intermediate type(equal cell to stroma ratio), and 9 (17%) as Myxoid type(stroma-rich). 6. Surgically 51 cases (94%) were showed well-encapsulated tumors, but histopathologically only 34 specimen (63%) were wellencapsulated. Therefore pleomorphic adenomas in minor salivary glands also have to be excised more widely, not enucleated. And in case of suspicious malignancy or large tumor, preoperative incisional biopsy can be applied in the center of the tumor for prevention of rupture of tumor cell, and total excision with use of frozen biopsy for detection of malignancy and confirming the excision m argin, and closed follow-up according to final histopathologic results is recommended.

Effect on the enucleation of the intraosseous ameloblastoma

Ameloblastoma is cytologically a benign tumor, but is clinically characterized by infiltrative growth and high recurrency. The criteria for surgical treatment of ameloblastoma has not yet established and it is generally accepted that ameloblastoma be treated differently based on clinical types. The purpose of this paper is to consider effectiveness of enucleation in large-sized intraosseous ameloblastoma that has treated more frequently by radical treatment. 39 cases of the intraosseous ameloblastomas were treated by enucleation in the department of oral and maxillofacial surgery of Yonsei University, dental college from February 1990 to January 2001. 25 cases were selected because they were large in size that could produce facial disfigurement or pathologic fracture of jaws. They were radiographically characterized by the cortical bone that was expanded or eroded locally and histopathologically by 19 solid ameloblastomas and 6 intramural type of unicystic ameloblastomas. Among the 25 cases, 4 cases - 3 solid ameloblastomas and 1 intramural type of ameloblastoma - recurred. Recurrence rate was 16%. The compact bone which is not invaded by ameloblastoma was used as surgical margin of enucleation with accompanying chemical cauterization for killing the residual tumor cells. This may have been the reason for the low recurrence rate. So, it is considered that enucleation and long-term follow-up enable the large-sized intraosseous ameloblastomas that were characterized by almost destroyed cancellous bone and expanded or discontinued cortical bone to treat minimizing facial disfigurement and masticatory dysfunction and sociopsychological impact produced by radical treatment. I recommend that the large-sized intraosseous ameloblastomas without involvement to the surrounding soft tissues be first treated by enucleation.

An anatomical study of the mandibular ramus in Korean patients with dentofacial deformity

Orthognathic surgery of the mandibular prognathism and the retrognathism is tend to be performed on the mandibular ramus to prevent inferor alveolar nerve injuries. The purpose of this study is to find a safe and accurate reference point on mandibular ramus for orthognathic surgery by comparative anatomical study of dentofacial deformity patients. We use 38 Korean Cadavers with normal occlusion(Group 1), 3-dimensional simulation of computerized tomogram of 23 patients with retrognathism (Group 2), 27 patients with mandibular prognathism (Group 3). Following results are obtained : 1. The maximum thickness of the mandibular ramus is 8.78+/-1.15mm for Group 2, 7.61+/-1.26mm for Group 1, 6.95+/-0.82mm for Group3 respectively (P=0001). The minimum thickness is 5.51+/-1.08mm for Group 1 , 5.06+/-0.40mm for Group 2, 4.56+/-0.78mm for Group3, respectively (p=0.0001). But, the thickness at the level of 5mm above the lingular is 0.78+/-0.65mm for Group 2, 5.63 +/-1.28mm for Group 1, 5.32+/-0.91mm for Group 3, respectively. There is no significant difference between these groups(P=0.0510). 2. The horizontal location from the midwaist point to lingular is 0.18+/-1.57mm for Group 1, 0.69+/-1.33mm for Group 2, 0.66+/-1.66mm for Group 3, and there is no significant difference between these groups(p=0.0835). But the vertical location from the midwaist point to lingular is 1.45+/-2.64mm for Group 1, 0.63+/-1.44mm for Group 2, 0.34+/-1.81mm for Group 3, and there is significant difference between these groups(p=0.0030). 3. The horizontal location from the midwaist point to mandibular foramen is 0.29+/-1.75mm for Group 1, 0.63+/-1.44mm for Group 2, 0.34+/-1.81mm for Group 3, and there is no significant difference between these groups(p=0.5403). But the vertical location from the midwaist point to mandibular foramen is -3.33+/-4.43mm for Group1, -4.79+/-2.26mm for Group 2, -6.06+/-2.99mm for Group 3, and there is significant difference between these groups(P=0.0001). 4. The horizontal length from the disto-buccal cusp tip of mandibular second molar to lingula is 30.97+/-4.17mm for Group 3, 28.29+/-2.65mm for Group 1, 25.48+/-0.77mm for Group 2 (p=0.0000), and also vertical length is 7.72+/-3.22mm for Group 3, 6.38+/-1.83mm for Group 1, 5.89+/-2.30mm for Group 2 (P=0.0014). 5. The location of lingular is 0.50 from anterior border of mandibular ramus in all groups, if it assumed the length from anterior border to posterior border is 1. And it is almost 0.33 from the sigmoid notch, if it assumed the length from sigmoid notch to antegonial notch is 1. 6. In Group 1, Antilingular prominence is located on (1.12+/-1.43mm, 4.01+/-2.36mm) from the midwaist point, and there is no correlation between antilingular prominence and lingular, mandibular foramen.

Morphology and topography of the lingual nerve in Koreans

Two major salivary glands, submandibular duct, lingual nerve, and vessels are situated beneath the mouth floor. Among these, passing through the pterygomandibular space, lingual nerve is innervated to the lingual gingiva and the mucosa of mouth floor, and is responsible for the general sensation of the anterior two thirds of the tongue. So, the injury of the lingual nerve during an anesthesia or surgery in the retromolar area may cause complications such as a numbness, a loss of taste of the tongue and the other dysfunctions. Therefore, to find out the morphology and the course of lingual nerve and to clarify the topographical relationships of lingual nerve at the infratemporal fossa and paralingual space area, 32 Korean hemi-sectioned heads were dissected macroscopically and microscopically with a viewpoint of clinical aspect in this study. This study demonstrated various anatomical characteristics with relation to the course and topography of the lingual nerve in Koreans. And clinical significances based on the anatomical variations through the topography of the courses and communications between the mandibular nerve branches were described in details.

A Clinical Study on Replantation of Avulsed Permanent Teeth

A material of 48 patients with 60 avulsed and replanted permanent teeth were followed retrospectively in the period of 1996. 1 to 1998. 12 (mean observation period=1year 7months). The age of the patients at the time of replantation ranged from 9 to 63 years (mean=24 years). Clinical records of patients were reviewed to obtain valid data concerning the extent of injury and treatment provided. Pulpal and periodontal healing states were examined with periapical x-rays and clinical examination procedures (i.e. percussion test and mobility test) at their recall visit. Root ankylosis was found in fifty-two teeth (87%) and root resorption in twenty-four (40%). Only two of the replanted teeth (3%) showed partial regeneration of the periodontal ligament. Six teeth (10%) resulted in tooth loss, but the remaining fifty-four were clinically well functioning. Most of teeth have mild marginal bone loss accompanied by gingival retraction without pathological periodontal pockets. The incidence of root resorption was much higher in younger age group. However, it was not affected by the interval between avulsion and replantation, the condition of supporting tissues, the degree of root formation and the type of splinting, indicating that multiple factors involved in determining the prognosis of replanted teeth. Based on these findings, avulsed teeth in unfavorable conditions (i.e. long extra-alveolar periods, etc.) should be preserved if possible.

RADIOGRAPHIC AND HISTOLOGIC STUDY OF THE MANDIBULAR INVASION BY GINGIVAL SQUAMOUS CELL CARCINOMA

Usefulness of midfacial degloving approach in oral & maxillofacial region

An epidemiological study on odontogenic tumour in Korean

There have been many different histological typing of odontogenic tumours and numerous reports on the epidemiological studies of the odontogenic tumours depending upon various these histological typing. Neoplasms and other tumours related to the odontogenic apparatus was classified into 21 entities by WHO in 1992. The purpose of this study is to get the clinically basic data of the odontogenic tumours in Korean according to this newly made WHO histological classification. The total of 4913 biopsied specimens were reviewed from the dept of Oral Pathology, College of Dentistry, Yonsei University for the period of Jan. 1985. to Dec. 1996. and among them 156 cases were diagnosed into the odontogenic tumours. The following results were obtained: 1. Odontogenic tumours were 156 cases(3.18%) of the total 4913 biopsy cases. Only the 10 different benign entities were observed in 156 cases of odontogenic tumour. 2. The most frequent odontogenic tumour was ameloblastoma(42.3%) and followed odontomas (41.0%), adenomatoid odontogenic tumours (4.5 per cent) and ossifying fibroma(3.8%) in order. 3. Overall male to female ratio was 1.14(53.2%) to 1(46.8%), but female ratio is higher than male in odontoma(53.1%) and myxoma(75.0%) respectively. 4. 134 cases(85.9%) of all odontogenic tumours were observed under the age of forty. Age distribution showed 60 cases(38.5%) in the second decade, 37 cases(23.7%) in the third decade, 22 cases(14%) in the fourth decade and 15 cases(9.6%) in the first decade of life 5. The ratio of odontogenic tumours of the mandible to maxilla was about 2 : 1 . Odontogenic tumours occured predominantly in the molar region(29.6%) and gonial region(17.08%) of the mandible and anterior region(18.8%) of the maxilla. Ameloblastoma occurred mostly in the molar region(45.5%), gonial region(28.1%), ascending ramus region(10.7%) and premolar region(9.1%) of the mandible, while odontomas predominated in the anterior region(44.9%) of the maxilla. 6. Most ameloblastomas were related with more the impacted teeth(62.1%) and root resorption(53.0%) than teeth migration(27.3%). In case of odontoma, teeth impaction(62.5%), teeth migration(75.0%) and root resorption(7.8%) were observed. 7. In the ameloblastomas, facial swelling was the most frequent chief complaint(80.3%) and followed by pain(9.1%).

A STUDY ON THE PROGNOSIS AFTER ENUCLEAT10N IN THE UNICYSTIC AMELOBLASTOMA

Since the apparent development of ameloblastoma in the wall of a dentigerous cyst was first described by Cahn in 1933. many colleagues have reported the ameloblastoma originated odontogenic cyst. In 1970. Vickers and Gorlin published specific histologic criterria of the ameloblastoma originated odontogenic cyst, and in 1977, robinson and Martinez referred to this variant as unicystic ameloblastoma in which the tesponse to encleation or curettage was found to be fanorable with low recurrence rate. This lesion was divided into 3 Groups (luminal, plexiform, connective tissue invasion type) according to the histopathologic feature by Ackeymann etc. in 1988, and they recommended radical treatment In connective tlssue Invasion type. Conservative enucleation and currettge have been reported the choice treatment compared with conventional ameloblastoma. which has represented low recurrent rate, but the study on the prognosis after enucletion according to the histologic subtypes of the unlcystic ameloblastoma has been rare. This study is to invested the recurrence and clinical features of 22 ameloblastomas which have been experienced by enucleation as trearment method from January 1990 to October 1997 in Dental College Hospital of Yonsei University. The results obtained are as follows. 1. The most common patients complains were painless or painful swelling of jaw(19 cases, 86.4%). dysthesia (2 cases, 9.1%), pus discharge (1 case, 4.5%) were next In order. 2. The most frequent age was 2nd decade which was 12 cases(54.5%), and next frequent age was 3rd decade which was 8 cases (36.5%). The average age was 20.5 years old, and sex ratio was 1.4:1 (male female). 3. All 22 cases were developed in the mandible, and body area occupied 15cases (68.2%), ramus area was 6 Cases(27.2%) and symphysis area was 1 case (4.5%). 4. Radiographically, unilocular type was 81.8%, and the cases related with impacted tooth were ular type and 3 cases (75%) In multllocular type. 5. According to histologic subtype by Ackermann's classification, luminal type and were 4case(18.2%) respeclively, connective tissue type was 12 cases (63.6%). 6. Average follow-up period was 3.4 years, and the recurrence was 1 case(4.5%) of total 22 cases, which was connective tissue Invasion type (7.14%) histologically. Based on the above results, when patient's function, esthetics, and paychologic factor are considered,the enucleation was adequarte primary treatment modality In any histologic type of the unlcystic ameloblastoma

THE EFFECT OF CAPSAICIN UPON DMBA INDUCED CANCEl OF THE BUCCAL POUCH IN HAMSTERS

Cancer chemoprevention can be defined as prevention or intervantion of cancer by the administration of one or chemical entities, either, either as individual drugs or as naturally occurring constituents of the diet. The name capsaicin(trans-8-methyl-N-vanillyl-6-nonenamide) was given by Thresh in 1848, and capsaicin is a primary pungent and irritating princple present in red peppers which are windely used as spices in korean food. The inhibitory effect of capsacin on stomach or skin cancers had been reported in lots of animal studies, but there were few reports In offal cancer carclnogenesls. This study is aimed to see the effect of capsalcln upon DMBA induced cancer of the buccal pouch in hamsters. In thls study, 87 Golden Syrian hamsters, weighing about 80-90g, were used and divided into 5 group : normal group (n=2)-untreated : control group(n=15)-DMBA painted : experimental group I(n=23)-capsaicin(10 micromol/2ml) and DMBA painted ; experimental groupII(n=23)-capsaicin administered and DMBA painted ; experimental group III(n=24)-administered and patinted. DMBA painted. According to groups, the animals were sacrificed at 5, 8, 11, 14, 17 week. Microscopic examination was done and BrdUrd labeling Index was calculated. The results are as follows : 1. According to gross examination, the leukoplakia at 5 week and the papilloma at 8 week were shown in the experimental group I, III. Those feature were appeased rapider than those of the control and expefimental group II. 2. According to gross examination, the exophytic tumorous lesions were shown in the control and all of the experimental groups from 14week, but the features of the control group were severer than those of the experimental groups. 3. According to histopathologic features, the papilloma was shown in all of the experimental group except the control group at 8 week 4. Histologically, the features of the control group were severer than those of the experimental groups from 14 week and there were similar features among the experimental group I, II, III at 17 week 5. At 8 week, BrdUrd labeling index of experimental group I, III were than that of control group and it was statistically significant (p<0.05) 6. The BrdUrd labeling index of experimental group III from 11week, experimental group I from 14week, experimental group II from 17 week were lowed than that of the control group respectively and It was statistically significant(p<0.05) 7. In the distribution of the BrdUrd labeled cells, BrdUrd was more significant in the basal and parabasal cell in dysplatic changes, but in carcinoma in situ, BrdUrd showed a irregular arrangement throughout the whole thickness of the tumor epithelium According to the abone results, the irritating property of the capsaicin accelerated the carcinogenesis in early phase, but the inhibitory effect was shown from carcinoma in situ phase. So the chemopreventive effect of the capaicin which is a major ingredient of red pepper can be expected. However, the further studies including the amount and method of capsaicin administration for preventive effect of oral cancer, should be followed.

Healing process of the reimplanted autoclaved autogenous mandible in adult dogs

No abstract available.

Immunohistochemical study on the distribution of hyman papillomavirus(HPV) 16/18 in oral squamous cell carcinomas, leukoplakias and papillomas

No abstract available.

Replantation of dysplastic bone in the surgical treatment of fibrous dysplasia

No abstract available.

Unicystic ameloblastoma: case report

No abstract available.

A study of Na+, K+-ATPase in the rat submandibular gland tumor induced by DMBA

No abstract available.