Biomedical subjects

Eduard Valmaseda-Castellón

Publications and source records attributed to Eduard Valmaseda-Castellón.

9 recordsLinked to original sources

PubMed2007

Delayed-onset infections after lower third molar extraction: a case-control study.

PURPOSE: To identify possible risk factors for delayed-onset infections and to develop a model for explaining the effects of these risk factors on the occurrence of delayed-onset infections in an outpatient clinic. MATERIALS AND METHODS: A retrospective case-control study comprising a total of 178 lower third molar extractions performed between 2001 and 2004 in the Oral Surgery and Orofacial Implantology Department of the School of Dentistry of the University of Barcelona, Spain. RESULTS: Bivariate analysis showed tooth sectioning, soft tissue and bone retention, and the position of the lower third molar (according to the classifications of Pell and Gregory, and of Winter) to be significantly associated with the development of delayed-onset infections. A logistic regression model included the following independent variables: position of the lower third molar according to Winter, and Pell and Gregory Classes I, II, and III, and degree of soft tissue retention. CONCLUSIONS: Lower third molars with total soft tissue retention, a lack of distal space and with a vertical or mesioangular tilt are more likely to develop delayed-onset infections. Tooth sectioning, bone retention, and depth of inclusion could also be risk factors for such infections. Heavy smokers seem to be more prone to this complication.

Adult↗

PubMed2006

Stafne bone cavity: a retrospective study of 11 cases.

OBJECTIVE: To describe the clinical and radiological characteristics of patients with Stafne bone cavity. STUDY DESIGN: A retrospective, observational study of 11 cases of Stafne bone cavity. After finding an imagine compatible with Stafne bone cavity in the Orthopantomograph(r) of 11 patients, a sialography of the mandibular gland was made in 3 cases, computerized tomography (CT) in 6 cases, and in 4 cases surgical intervention to confirm the diagnosis. RESULTS: The average age was 51.5 years, predominantly males. The entity was diagnosed incidentally during a routine radiology in all cases. The sialography revealed glandular tissue within the defect, and the CT demonstrated the conservation of the lingual cortical and the peripheral origin of the lesion. Glandular tissue was found within the lesions of two of the patients who underwent surgery, and in the other two the cavity was empty. No progressive changes were found in any of the 11 cases. CONCLUSIONS: Stafne bone cavity was an incidental finding, presenting no evolutionary changes, and as such conservatory therapy based on periodic controls was indicated. Currently, complementary techniques such as CT are sufficient to establish a certain diagnosis.

Adult↗

PubMed2006

Spontaneous third-molar eruption after second-molar extraction in orthodontic patients.

INTRODUCTION: This retrospective study was conducted to assess the eruption of third molars by using panoramic radiographs and to identify the variables associated with unsuccessful eruption. METHODS: The subjects were 48 patients who had 128 permanent second molars extracted during or before orthodontic treatment. Their ages at extraction were 11 to 23 years. The position of the third molars was assessed from panoramic radiographs taken before second-molar extraction and after third-molar eruption. The median time of eruption was 3 to 4 years (interquartile range, 2 years). A successful final position was defined as eruption with proximal contact with the adjacent first molar and an angle between these 2 teeth of no more than 35 degrees. RESULTS: A total of 96.2% of the maxillary and 66.2% of the mandibular third molars erupted in good positions. The maxillary third molars uprighted and successfully replaced the second molars. In the case of Nolla developmental stage > 8, the proximal contact could remain open. Most mandibular third molars uprighted and successfully replaced the second molars. Most unsuccessful eruptions of mandibular third molars were due to excessive mesial tilting or lack of proximal contact. Unsuccessful third-molar eruptions occurred in older patients who had higher Nolla developmental stages. CONCLUSIONS: Maxillary third molars upright and acceptably replace maxillary second molars after extraction for orthodontic purposes. However, if the Nolla developmental stage is > 8, proximal contact could remain open. Most mandibular third molars also upright and acceptably replace the second molars after extraction. Unsuccessful third-molar eruption is most common in older patients with higher Nolla developmental stages. Most unsuccessful eruptions are due to excessive mesial tilting or lack of proximal contact.

Adolescent↗

PubMed2006

Frequency and evolution of lingual nerve lesions following lower third molar extraction.

PURPOSE: To calculate the frequency of lingual nerve (LN) damage caused by lower third molar extraction and describe the evolution of LN sensitivity as well as the prognosis of LN damage based on preoperative data. PATIENTS AND METHODS: A retrospective study of 4,995 lower third molar extractions performed in 3,513 outpatients of the Department of Oral and Maxillofacial Surgery (University of Barcelona, Spain) between January 1998 and September 2001. RESULTS: Twenty-four extractions (0.5%) resulted in LN impairment. All involved ostectomy, with tooth sectioning in 20 cases. Cox regression analysis showed no risk factors for the persistence of LN injury during lower third molar extraction. The sensitivity recovery rate was greater in the first 3 months and then gradually decreased. CONCLUSION: LN impairment usually recovers, the recovery rate being faster in the first months. LN damage is generally associated with ostectomy and tooth sectioning.

Adolescent↗

PubMed2005

Incidence and evolution of inferior alveolar nerve lesions following lower third molar extraction.

OBJECTIVES: To calculate the incidence of inferior alveolar nerve (IAN) damage due to lower third molar extraction and to describe the evolution of IAN sensitivity and the prognosis of IAN damage based on preoperative data. STUDY DESIGN: A retrospective study of 4995 lower third molar extractions in 3513 outpatients. RESULTS: Fifty-five extractions (1.1%) resulted in IAN impairment. Cox regression analysis showed age to be a risk factor for the persistence of IAN injury due to lower third molar extraction. The sensation recovery rate was higher in the first 3 months. Fifty percent of the patients showed full recovery after 6 months. CONCLUSIONS: Most cases of IAN impairment following lower third molar extraction recover within 6 months, though in some cases recovery takes more than 1 year. Older patients are at an increased risk of incomplete recovery of chin and lip sensibility after third molar extraction.

Adolescent↗

PubMed2005

Incidence and clinical features of delayed-onset infections after extraction of lower third molars.

OBJECTIVE: To describe the incidence and clinical features of delayed-onset wound infections after lower third molar extractions in an outpatient clinic. STUDY DESIGN: Retrospective forward study of 958 lower third molar extractions in the Oral Surgery and Implantology Department of the School of Dentistry of the University of Barcelona (Spain). RESULTS: Fourteen delayed-onset wound infections were recorded after suture removal (1.5% of the extractions). These infections usually developed 3-5 weeks after extraction. Half of the cases presented a radiolucency around the crown of the third molar. In most cases, ostectomy (13/14) and tooth sectioning (11/14) had been made. CONCLUSIONS: Delayed infections were a rare postoperative complication of lower third molars extractions. Nevertheless, patients should be warned that infection can still occur several weeks after the surgical procedure.

Adolescent↗

PubMed2004

Facial nerve repair with epineural suture and anastomosis using fibrin adhesive: an experimental study in the rabbit.

PURPOSE: An experimental model in rabbits was used to compare epineural suturing and fibrin adhesive anastomosis for facial nerve repair. MATERIALS AND METHODS: Thirty-four facial nerves from 17 rabbits were isolated, transected, and anastomosed, with an evaluation of their electrophysiologic and histologic parameters. The rabbits were divided into 2 groups of 5 and 12 animals, respectively: a 10-mm defect was made in the right facial nerve in the first group, with transection and epineural suturing of the left nerve, followed by death after 120 days. This was the control-versus-epineural suture group. In the second group, the right facial nerve was transected and subjected to epineural suturing, while the left nerve was transected and anastomosed using fibrin adhesive. The rabbits were killed 15, 30, 60, and 120 days after the microsurgical procedure. This was the epineural suture-versus-fibrin adhesive group. RESULTS: From day 30, the number of regenerated axons increased with time in the epineural suture and fibrin adhesive anastomotic specimens. Epineural suture showed more regenerated axons and a faster linear rate of regeneration than anastomosis with fibrin adhesive. The reduction in conduction velocity decreased significantly with time with the same linear pattern for both suture techniques. CONCLUSIONS: Epineural suturing offered superior performance versus anastomosis with fibrin adhesive in terms of axon count but not in decrease in conduction velocity.

Anastomosis, Surgical↗

PubMedDate not supplied

Analgesic efficacy of diclofenac sodium versus ibuprofen following surgical extraction of impacted lower third molars.

OBJECTIVE: An evaluation is made of the analgesic efficacy of diclofenac sodium versus ibuprofen after impacted lower third molar surgery. STUDY DESIGN: The patients were randomly assigned to one of two groups (ibuprofen or diclofenac). The difficulty of third molar surgery, performed under local anesthesia, was assessed by the degree of inclusion involved. The recorded study variables were pain intensity and the need for rescue medication during one week. The recordings were made once a day at the same time, using a patient-completed questionnaire. RESULTS: Eighty-one patients were finally included in the study (87.1%). The results were similar in the first 48 postoperative hours in both groups, though on the third day the diclofenac group tended to show higher pain scores--the differences being nonsignificant, however (p<0.05). This tendency was also reflected by an increased need for rescue medication and the consumption of a larger number of tablets in the diclofenac group. CONCLUSIONS: There were no statistically significant differences in analgesic efficacy between diclofenac sodium and ibuprofen, though the former was associated with an increased need for supplementary medication in the first two postoperative days (p<0.05).

Adolescent↗

PubMedDate not supplied

Morbidity of third molar extraction in patients between 12 and 18 years of age.

OBJECTIVE: An analysis is made of the incidence of complications following third molar surgical extraction in patients between 12 and 18 years of age. PATIENTS AND METHOD: A retrospective study was conducted of 390 surgical extractions of upper and lower third molars in 173 patients operated upon under locoregional anesthesia during the year 2000 in the Master in Oral Surgery and Implantology of Barcelona University Dental School (Spain). The patients were divided into three age groups (A: 12-14 years, B: 15-16 years, C: 17-18 years). The reason for extraction, the degree of dental development, and third molar position, angle and impaction were recorded. Finally, the association of these variables to the appearance of postoperative complications was analyzed. RESULTS: Most patients were females (66.9%), and the age group in which most extractions were carried out (62.8%) corresponded to Group C (17-18 years). The main reason for extraction was orthodontist indication (40.5%), closely followed by prophylaxis (39.5%). The existence of clinical manifestations was an indication for extraction in 20% of cases. The postoperative complications rate after the extraction of the global 390 molars was 15.6%. In Groups A, B and C the complication risks were 17.4%, 19% and 13.7%, respectively. All complications were reversible and of short duration. One case each of inferior alveolar nerve paresthesia and lingual nerve paresthesia was recorded, which subsided after one and two months, respectively. CONCLUSIONS: There were no significant differences in complications between the three age groups. An increased tendency towards complications was observed in females, and the percentage of postoperative problems increased.

Adolescent↗