Orthodontic treatment as an adjunct to periodontal therapy.

This study discusses the role of orthodontic treatment as an adjunct to the control and treatment of periodontal disease conditions, and describes a clinical case of severe anterior mandibular crowding and periodontal disease followed up for nine years and three months after orthodontic treatment completion. Malocclusion impaired proper dental hygiene, which led to bone loss and development of a periodontal abscess between mandibular canines and lateral incisors. After scaling and root planing, orthodontic treatment was initiated with extraction of the four second premolars, to correct the deficiency detected in cephalometric and model analysis.

Three consecutive days of application of LED therapy is necessary to inhibit experimentally induced root resorption in rats: a microtomographic study.

Previous studies have suggested that phototherapy may modulate orthodontic tooth movement and the incidence of root resorption. We aimed to identify a minimal dose-response relationship to LED therapy with regard to orthodontic tooth movement (OTM) and root resorption in rats. Forty-eight male Wistar rats were divided into six groups with equal and random distribution: control (C) no intervention; three daily LED irradiation (CLED); submitted only to OTM (RR); OTM and LED irradiation on the first day (LED1); OTM and two LED irradiation on the first and second days (LED2); and OTM and three LED irradiation on the first, second, and third days (LED3).

Orthodontic extrusion as an aid in oral rehabilitation.

The aims of this study were to discuss the use of orthodontics for oral rehabilitation in patients, particularly for dealing with bone defects, and to present a clinical case in which the orthodontic extrusive remodeling approach was used for bone gain in the posterior maxillary region, with subsequent implant placement. After 18 months of treatment, the dimensions of the alveolar process were restored and an implant was fixed in the maxillary region, with appropriate bone and gingival levels. Based on the literature and clinical evidence, orthodontic extrusion may be considered as an alternative to surgery to obtain a suitable implant site.

Resorption of roots of different dimension induced by different types of forces.

Root resorption is a variable to be considered in induced tooth movement (ITM). It is related to root morphology and alveolar bone crest, and also to the types of forces exerted by mechanotherapy. This histometric study evaluated the predominance of root resorption among roots of different dimensions, following ITM with different types of forces and at different time intervals.

Induction of ankylosis in the incisor for orthodontic tooth movement in rats.

Background/aim: The present research evaluated the induction of ankylosis and the eruption rate in rat incisors, with the aim of achieving stable anchorage for orthodontic tooth movement (OTM) of the molars.

Material And Methods: Fifteen male Wistar rats were used. In the Experimental group, the right superior incisor of each animal was extracted, denuded of the PDL and the dental papilla, and reimplanted.

Importance of periodontal ligament thickness.

This study evaluated whether periodontal ligament (PL) thickness varied with root size and examined the possible influence of this variation on orthodontic mechanics. Measurements were taken of the maxillary left first molar in 54 male Wistar rats. Mean mesial and distal PL thicknesses were compared between the intermediate buccal and mesiobuccal roots using paired Student's t-tests with a 5% significance level.

Effect of heat treatment on stainless steel orthodontic wires.

This study evaluated the effect of heat treatment on CrNi stainless steel orthodontic archwires. Half of forty archwires of each thickness - 0.014" (0.

Multidisciplinary treatment of a fractured root: a case report.

Aim: To describe the orthodontic, periodontal and prosthetic management of a case with a 3 mm root fracture below the crest of the alveolar bone.

Methods: The root was extruded and periodontal surgery carried out to improve aesthetics and dental function.

Conclusion: A multidisciplinary approach to the management of dental root fractures is necessary for successful treatment.

Knowledge on dental trauma and orthodontic tooth movement held by a group of orthodontists.

The objective of this work was to assess the knowledge about orthodontic tooth movement and dental trauma held by a group of orthodontists in specific areas of Brazil. For this purpose, 166 questionnaires with 15 objective questions about this subject were distributed. One hundred and five questionnaires were properly filled and collected after 30 days.

Compensatory canine angulation in angle Class II and III patients.

The aim of this study was to evaluate the occurence of compensation in mesiodistal axial inclinations of canines in skeletal malocclusions patients. The sample consisted of 25 Angle Class II, division 1 malocclusion (group 1) and 19 Angle Class III malocclusion patients (group 2). After measurement of dental angulations through a method that associates plaster model photography and AutoCad software, comparisons between the groups were performed by T-test for independent samples.

First description of a PEComa (perivascular epithelioid cell tumor) of the colon: report of a case and review of the literature.

We describe a young female patient suffering from a PEComa (perivascular epithelioid cell tumor) of the cecum, incidentally found at an examination made by her family physician. The perivascular epithelioid cell tumor is a very rare tumor, until today reported in a few cases in falciform ligament, uterus, jejunum, terminal ileum, rectum, liver, kidney, lung, pancreas, prostate, and soft tissue of the thigh. This tumor is part of a new group of tumors, comprised of angiomyolipoma, lymphangiomyolipoma, and clear-cell myomelanocytic "sugar" tumor.

[Twelve years of laparoscopic cholecystectomy].

Unlabelled: We studied developments in indication, operation time, conversion rate, morbidity, and mortality from the beginning of laparoscopic cholecystectomy. Between 1990 and 2002 we prospectively evaluated 4498 patients undergoing cholecystectomy (CE), of whom 79% were treated laparoscopically (lap). In 6.

Reduction in co-morbidities 4 years after laparoscopic adjustable gastric banding.

Background: We investigated the reduction in co-morbidities following laparoscopic adjustable silicone gastric banding (LAGB).

Methods: Between December 1996 and October 2002, 295 patients with mean BMI 45 kg/m(2) were operated (79% women, average age 41 years). Mean follow-up was 44 months.

Re-operations following laparoscopic adjustable gastric banding.

Background: Re-operations after laparoscopic adjustable gastric banding operation (LAGB) are band-associated or due to complications of the access-port. Symptoms, diagnostics, operations, and follow-up of patients with re-operations were analyzed.

Methods: Between December 1996 and January 2002, 250 morbidly obese patients were treated with LAGB and prospectively evaluated using a standardized protocol.

Overexpression of Wnt target genes in adenomas of familial adenomatous polyposis patients.

Germline mutations within the adenomatous polyposis coli (APC) gene, a key member of the Wnt signalling pathway, have been shown to cause adenoma development in familial adenomatous polyposis (FAP), a dominantly inherited predisposition to colorectal cancer. Although it has been suggested for several years that alterations within the Wnt pathway are the underlying events for the development of colorectal adenomas in FAP patients, no detailed analysis of the gene expressions of Wnt pathway members has been available in fresh colorectal tissue of FAP patients, so far. Thus, we investigated potential differences in the expressions of APC and its Wnt partners conductin, beta-catenin, cyclin D1, and c-myc in normal colorectal mucosa and matched adenoma tissue of 14 FAP patients using real-time quantitative PCR.

Radiologic and endoscopic evaluation for laparoscopic adjustable gastric banding: preoperative and follow-up.

Background: Laparoscopic adjustable silicone gastric banding (LASGB) has replaced vertical banded gastroplasty (VBG) as the most widespread restrictive bariatric operation in Europe. Although these two procedures are similar in principle, the experience concerning the preoperative examinations and follow-up cannot be arbitrarily transferred from VBG to LASGB. The reasons for and consequences drawn from radiologic and endoscopic examinations are described.

Prevalence of postcholecystectomy symptoms: long-term outcome after open versus laparoscopic cholecystectomy.

After cholecystectomy a certain number of patients continue to suffer from abdominal symptoms or develop such symptoms postoperatively. The aim of this study was to compare the prevalence of postcholecystectomy symptoms with open cholecystectomy during the prelaparoscopic era and those with laparoscopic cholecystectomy 4 years after introduction of the laparoscopic technique. Between July 1988 and June 1989 a total of 163 consecutive patients with elective open cholecystectomy and between September 1994 and August 1995 a total of 234 consecutive patients with elective laparoscopic cholecystectomy were prospectively evaluated using a standard questionnaire about preoperative symptoms, diagnostic modalities, and intraoperative findings.

The learning curve of laparoscopic cholecystectomy and changes in indications: one institutions's experience with 2,650 cholecystectomies.

Purpose: In a prospective series of 2,650 consecutive patients undergoing cholecystectomy, we analyzed the learning curve since the introduction of laparoscopic cholecystectomy (LC) in terms of operating time, conversion rate, morbidity, mortality, and consequent changes in indications for either laparoscopic or open cholecystectomy (OC).

Patients And Methods: Between July 1990 and June 1997, LC was performed in 1,929 patients (73%), 203 of whom (7.5%) had to be converted to OC, while 518 patients (19.

[Increasing frequency of bariatric surgery interventions since replacement of gastroplasty by laparoscopic gastric banding in the treatment of morbid obesity].

Between 1984 and 1996 we performed a Mason gastroplasty for the treatment of morbid obesity: 14 patients (average age 40 (26-48) years, body mass index (BMI) 48 (37-71) kg/m2, excessive body weight 67 (41-116) kg). Since the end of 1996 we now apply adjustable laparoscopic gastric banding (lab band): 73 patients (average age 39 (22-64) years, BMI 45 (32-69) kg/m2, excessive body weight 66 (41-116) kg). We compared the early and late results of both methods.

[CA19-9 has no value as a tumor marker in obstructive jaundice].

In the differential diagnosis of pancreatic cancer, CA19-9 appears to be the most sensitive and specific marker currently in use. In the absence of jaundice and at levels greater than 1000 U/ml, the specificity is almost 100%. Levels higher than 1000 U/ml are very uncommon for benign diseases.

GM-CSF gene expression and protein production in human colorectal cancer cell lines and clinical tumor specimens.

Granulocyte-macrophage colony stimulating factor (GM-CSF) gene expression and protein production were investigated in colorectal cancer cell lines and surgical specimens. In 6 of 6 established tumor lines, expression of the GM-CSF gene was observed by reverse transcription polymerase chain reaction (RT-PCR). Furthermore, for 2 of the lines, the cytokine was detectable in > or = 100 pg/ml amounts in culture supernatants by enzyme-linked immunosorbent assay tests.

[Postcholecystectomy complaints one year after laparoscopic cholecystectomy. Results of a prospective study of 253 patients].

Aims: We studied the nature and frequency of symptoms 1 year after laparoscopic cholecystectomy in order to define pre- and perioperative factors that influence the long-term outcome.

Method: Between September 1994 and August 1995 we prospectively evaluated 268 patients undergoing laparoscopic cholecystectomy using a standard questionnaire. After an average of 16 months (12-25 months) the patients were asked about their symptoms using a similar questionnaire by telephone or were followed up clinically if necessary.

[Meckel lithiasis. A rare complication of a Meckel's diverticulum].

History And Clinical Findings: Acute abdominal pain, radiating to the right and left lower abdomen with pain on abdominal pressure developed in a 67-year-old man. There were questionable signs of peritonitis.

Investigations: Leukocytosis (20,000/microliter) and a high level of C-reactive protein (177 mg/l) were found.

[Results of anal sphincteroplasty in fecal incontinence--significance of intra-anal ultrasound imaging].

Unlabelled: The aim of the study was to evaluate the clinical, manometric and endosonographic results of overlapping sphincteroplasty for traumatic sphincter defects documented by endosonography.

Patients And Method: We performed an overlap repair in 10 women aged 34 to 68 with fecal incontinence due to sphincter defects after obstetric (n = 8) or iatrogenic (n = 2) trauma. The fecal incontinence was graded using the Miller Score (0-18 points).

[Incarcerated diaphragmatic hernia as a sequela of iatrogenic diaphragmatic defect. 2 case reports].

We describe two cases of iatrogenic adult diaphragmatic hernias with incarceration which occurred postoperatively and led to an acute abdomen. The pathogenesis, clinical findings, the often challenging diagnostics and the therapeutic management of this rare condition are discussed.