Radiographic morphometric study of 37 periapical lesions in 30 patients: validation of success criteria.

Purpose: The purpose of this study was to establish the midterm prognosis of periapical surgery by use of the ultrasound technique, comparing a scale obtained by image analysis with the success rates according to other prognostic scales.

Materials And Methods: A clinical follow-up study was performed between September 2004 and September 2005. Thirty-six patients with chronic periapical lesions were treated with periapical surgery via the ultrasound technique and root-end filling with silver amalgam.

Type 1 diabetes mellitus and periodontal disease: relationship to different clinical variables.

Objective: This study is designed to evaluate the frequency of periodontal disease in a group of patients with type 1 diabetes mellitus and how this relates with diabetes metabolic control, duration of diabetes, and presence of diabetic complications.

Methods: A comparison was made of periodontal parameters (plaque index, bleeding index, pocket depth and attachment loss) in a group of diabetic patients (n=90) versus a group of non-diabetics (n=90). Logistic regression analysis was performed to evaluate relationship between periodontal parameters and degree of metabolic control, the duration of the disease, and the appearance of complications.

Influence of perforation of the sinus membrane on the survival rate of implants placed after direct sinus lift. Literature update.

The aim of this paper was to review the procedures adopted when a perforation of the sinus membrane takes place during a direct sinus lift for filling with bone graft; and the survival of implants in those cases in which perforation of the sinus membrane occurred. A bibliographical search in PUBMED was carried out of articles published from 1997 to 2008, with the key words "sinus perforation" and "membrane perforation". All articles specifying the two following criteria were included: (a) procedure in the case of perforation of the sinus membrane during direct sinus lift; and (b) the number and survival rate of implants placed in direct sinus lift with perforated and non perforated membrane.

Expression of cytokeratins in epithelialized periapical lesions.

Objective: This study attempted to clarify whether differential immunocytokeratin expression occurs in cystic and epithelialized noncystic lesions.

Study Design: From January 2003 to June 2004, periapical surgery was carried out on 70 teeth, collecting 70 histologic samples. Serial sections of original histologic slices were prepared for immunostaining.

Immediately restored dental implants for partial-arch applications: a study of 12 cases.

Purpose: To study the success of immediate loading in partial-arch applications and to evaluate the level of patient satisfaction.

Materials And Methods: We treated 12 partially edentulous patients, placing 36 implants and rehabilitating them with screw-retained bridges on the same day. The level of satisfaction with the provisional prosthesis was evaluated on a visual analog scale.

Pain and swelling in periapical surgery. A literature update.

In recent years, periapical surgery (PS) has evolved thanks to the incorporation of technical and diagnostic advances. In PS, secondary effects such as pain and swelling occur as with all surgical procedures. The objective of the present study is to review the literature of articles published on pain and swelling during the postoperative period in periapical surgery.

Software applied to oral implantology: update.

Software in combination with imaging techniques is used increasingly for diagnosis, planning and treatment in oral implantology. Computer-aided surgery allows a great accuracy in implant positioning to be obtained, taking advantage of the amount of bone available and facilitating minimally invasive surgery. It is a significant aid in determining implant number, location, angle and characteristics.

Malignant mental nerve neuropathy: systematic review.

Malignant mental neuropathy (MMN) is a neurological manifestation of cancer, characterized by the presence of hypoesthesia or anesthesia restricted to the territory of the mental branch of the mandibular nerve. A systematic review of the literature has been made on MMN, analyzing the etiology, pathogeny, clinical characteristics, complementary tests and the prognosis. Sixteen studies, providing 136 cases were selected.

Computer-guided implant placement in a patient with severe atrophy.

Computer software associated with imaging techniques facilitates diagnosis, planning, and management in cases of severe maxillary atrophy, by reducing the incidence of complications and improving the postoperative course and functional outcome. This article reports on a case of a 66-year-old woman with maxillary atrophy. Computer software was used to plan and position 6 maxillary and 4 mandibular implants, taking maximum advantage of the remaining bone.

Anti-TNF-alpha immunotherapy is associated with increased gingival inflammation without clinical attachment loss in subjects with rheumatoid arthritis.

Background: Because periodontitis presents many similarities with rheumatoid arthritis (RA) with regard to tumor necrosis factor-alpha (TNF-alpha)-induced bone resorption, the benefits of TNF-alpha blockade in RA prompted us to determine its efficacy in treating coexisting periodontitis.

Methods: Periodontal status was evaluated in 40 subjects with RA who were divided into two groups: Group I contained 20 subjects who had received infliximab every 6 weeks for > or =22 months at the time of periodontal evaluation. The 20 subjects in group II were evaluated before their first infusion with infliximab.

Osteoporosis: a neuroskeletal disease?

Osteoporosis is caused by a failure of bone homeostasis, but the precise molecular mechanisms controlling bone homeostasis are largely unknown. Increasing evidence that neurons and neurotransmitters are intimately involved in bone remodelling has shed light on a novel regulatory mechanism for bone homeostasis. Namely, like all other homeostatic functions, bone remodelling is under the control of the hypothalamus, and osteoporosis is considered to be a neuroskeletal disease.

Comparative study of wide-diameter implants placed after dental extraction and implants positioned in mature bone for molar replacement.

Objective: The aim of this study was to compare wide-diameter implants placed in mature bone versus implants inserted in postextraction bone.

Material And Methods: A retrospective case study was made; the sample was composed of subjects who had had wide implants placed in the molar area between 2003 and 2005. Two groups were formed: implants placed in mature bone and implants in postextraction bone.

Relationship between histological diagnosis and evolution of 70 periapical lesions at 12 months, treated by periapical surgery.

Purpose: To relate the histologic diagnosis and radiographic size with the prognosis of 70 biopsies obtained via periapical surgery.

Materials And Methods: Seventy biopsies obtained during periapical surgery were histologically analyzed following curettage of the tissue, establishing the diagnosis as either apical granuloma, radicular cyst, or scar tissue. The radiographic size of the lesion (area in mm(2)) before surgery and after 1 year of follow-up was measured.

Correlation of radiographic size and the presence of radiopaque lamina with histological findings in 70 periapical lesions.

Purpose: This study was conducted to relate the histological diagnosis of chronic inflammatory periapical lesions with the radiographic images of these lesions.

Materials And Methods: A total of 70 biopsy specimens obtained during periapical surgery were stained with hematoxylin and eosin and examined under a microscope. Histological analysis established the diagnosis as granuloma, cyst, or scar tissue.

Immediately restored dental implants for partial-arch applications. A literature update.

This article carries out a literature update on immediately restored dental implants in partially edentulous patients. A search was made in Medline of all articles published between the year 2000 and February 2007, including all articles published in both English and Spanish, in which immediate restoration of implants was made of partially edentulous areas with a minimum of 12 implants and six months follow-up. Certain decisive factors exist for the success of this technique in partially edentulous patients, such as primary stability, a roughened implant surface, and the absence of parafunctional habits in patients acceptable for this type of treatment.

Periapical surgery in maxillary premolars and molars: analysis in terms of the distance between the lesion and the maxillary sinus.

Purpose: This study compares periapical surgery (PS) of the maxillary premolars and molars in close proximity to the maxillary sinus with those not in close proximity, and assesses postoperative morbidity and prognosis.

Patients And Methods: A prospective follow-up study was carried out on clinical cases of PS using the ultrasound technique. Only patients undergoing PS in maxillary premolars and molars were included in this study; minimum follow-up was set at 12 months.

Mental neuropathy as a manifestation associated with malignant processes: its significance in relation to patient survival.

Purpose: Mental neuropathy (MN) is characterized by the presence of a sensory defect in the form of paresthesias or dysesthesias in the territory innervated by the mental nerve. MN may be the first manifestation of systemic cancer, a symptom of spread of an established tumor, or a sign of infiltration in an intraoral lesion. In any of these cases, the symptom is indicative of a very poor patient prognosis.

Resonance frequency analysis of dental implant stability during the healing period.

Purpose: The objective of the present study was to measure the implant stability quotient (ISQ) values during the osseointegration period, and determine the factors that affect implant stability.

Materials And Methods: To measure implant stability, resonance frequency analysis (RFA) was performed in 24 patients (12 women, 12 men) with a total 64 Defcon implants (10 anterior maxilla, 12 posterior maxilla, 18 anterior mandible, 24 posterior mandible). Bone type was classified according to the Lekholm and Zarb index (52 type II bone, 12 type III).

Intraoperative complications during oral implantology.

Dental implant placement is a controlled, programmed surgical procedure, not without its complications. The aim of the present paper is to study the intraoperative complications in implant surgery, carrying out a review of articles appearing in Medline over the last 10 years. Among the intra operative complications related with surgery, hemorrhagic accidents occur most frequently in the interforaminal region, since the majority of the vascular branches enter the mandibular bone in this region.

Evaluation of healing criteria for success after periapical surgery.

Introduction: In periapical surgery, the absence of standardization between different studies makes it difficult to compare the outcomes.

Objective: To compare the healing classification of different authors and evaluate the prognostic criteria of periapical surgery at 12 months.

Material And Methods: 278 patients (101 men and 177 women) with a mean age of 38.

Flap repositioning versus conventional suturing in third molar surgery.

Objectives: A comparative study is made of two types of flaps in semi-impacted third molar surgery and their relation to the postoperative period (pain, swelling and trismus).

Material And Methods: Twenty-five healthy patients were subjected to surgical extraction of both semi-impacted lower third molars, located in a similar clinical and radiographic position. In 25 cases the wound was sutured using a reflection flap (healing by first intention), while in the 25 contralateral cases the conventional technique was used (simple approximation of the wound margins).

Marginal bone loss in dental implants subjected to early loading (6 to 8 weeks postplacement) with a retrospective short-term follow-up.

Purpose: To evaluate the success rate and marginal bone loss in dental implants loaded after 8 weeks in the maxilla and after 6 weeks in the mandible, after 1 year of follow-up.

Materials And Methods: A retrospective case series study was made. The sample was composed of subjects having 1 or more implants placed and loaded early between 2004 and 2006.

Histological comparison of bone induced from autogenously grafted periosteum with bone induced from autogenously grafted bone marrow in the rat calvarial defect model.

Both periosteum and bone marrow have the potential to induce heterotopic bone when grafted. Whether the process of bone formation is controlled by the recipient environment where the donor graft is placed or by factors from the donor site is not well documented. The purpose of this study was to examine the histology of new bone induced by either autogenously grafted periosteum or autogenously grafted bone marrow using the rat calvarial defect model in Sprague-Dawley rats.

The post-endodontic periapical lesion: histologic and etiopathogenic aspects.

Apical periodontitis is produced in the majority of cases by intraradicular infection. Treatment consists in the elimination of the infectious agents by endodontia. Even when carrying out a correct cleansing and filling of canals, it is possible that periapical periodontitis will persist in the form of an asymptomatic radiolucency, giving rise to the post-endodontic periapical lesion.

The evaluation of bone formation of the whole-tissue periosteum transplantation in combination with beta-tricalcium phosphate (TCP).

We investigated the osteogenic potential of a combination graft of beta-tricalcium phosphate (TCP) and periosteum in the rat calvarial defect model. The combination beta-TCP and periosteum graft was grafted into rat calvarial defects; the newly formed bone in the defect was studied histologically and radiographically and compared with periosteum grafts and TCP grafts. Ten days after combination grafting, the grafted periosteum showed cell proliferation and Runx2 immunoreaction; 20 days after grafting, new bone formation was seen around the beta-TCP; and 30 days after grafting, new bone developed and actively replaced beta-TCP, while radiography showed calcified areas.