Association between dental anxiety and intraoperative pain during root canal treatment: a cross-sectional study.

AIM: To investigate whether dental anxiety influences the intraoperative pain felt by patients during root canal treatment. METHODOLOGY: In a cross-sectional design, 180 patients (90 men and 90 women) were included. Pre-operative anxiety levels were assessed using the short-form Dental Anxiety Inventory (S-DAI). Pain during root canal treatment was evaluated using a 10-cm visual analogue scale (VAS) that ranked the level of pain between 'Absence of pain' and 'Unbearable pain'. The minimal sample size was determined using the software of the National Center for Advancing Translational Sciences (NIH, UK). Multivariate logistic regression analysis was used to identify relationships between variables. RESULTS: Mean pain level during root canal treatment was 2.2 ± 2.1. The mean anxiety S-DAI score was 27.2 ± 12.5. Fifty percent of men had mild anxiety levels, while in 70% of women anxiety was moderate or high (P = 0.017). Anxiety correlated positively with intraoperative pain (R = 0.406). Multivariate logistic regression analysis revealed that anxiety was significantly associated with intraoperative pain felt by patients (OR = 4.0; 95% C.I. = 1.7-9.3; P = 0.001). CONCLUSIONS: Anxious patients were more than twice as likely to feel moderate or intense intraoperative pain during root canal treatment. To know the patient´s degree of anxiety could help the dentist to decide whether to use anxiolytic premedication and/or supplemental local anaesthesia to assure better control of pain during root canal treatment.

Cardiovascular diseases and apical periodontitis: association not always implies causality.

BACKGROUND: Several studies published in the last two decades have found an association between the prevalence of apical periodontitis (AP) or root canal treatment (RCT) and cardiovascular diseases (CVDs). However, the demonstration of association does not prove by itself the existence of a cause-effect relationship. Two diseases can appear as statistically related without any of them directly affecting the values of the other, resulting in a non-causal relationship. The aim of this narrative review is to summarize the current state of knowledge regarding the association between AP and CVDs, analysing it according to the Hill's causality criteria. MATERIALS AND METHODS: Epidemiological studies carried out on the association between CVDs and AP or RCT published in English until 8 December 2019 were identified. Forty-four articles were selected and its results were analysed. RESULTS: Numerous cross-sectional epidemiological studies have found significant relationship between CVDs and AP. The odds ratio values range 1.6 - 5.4. However, other studies have not found significant association. Respect to RCT, some studies found correlation, but others found no association or even found that RCT is a protective factor against CVDs. CONCLUSIONS: The results are inconsistent and a causal relationship between CVDS and endodontic disease cannot be stablished. The risk factors common to both diseases can act as confounding factors, biasing the results. To reach definitive conclusions about the type of association (causal or non-causal) between both diseases, longitudinal epidemiological studies must be carried out to establish the temporal relationship and the dose-response gradient.

Effectiveness and clinical implications of the use of topical antibiotics in regenerative endodontic procedures: a review.

Regenerative endodontic procedures (REPs) are biologically based procedures planned to replace damaged tissues, including dentinee and root structures, as well as cells of the pulp-dentine complex. Effective sterilization of the root canal is essential in REPs, and antibiotics have been widely used to disinfect root canals. The aim of this paper was to review the scientific literature on (i) Effectiveness of antibiotics used in REPs against bacteria implicated in endodontic disease; (ii) Scientific evidence supporting the use of topical antibiotics in REPs; (iii) Clinical implications of the use of antibiotics in REPs and the possible side effects; (iv) Effect of antibiotics on dental pulp stem cells; and (v) Ongoing research on the use of antibiotics in REPs. Antibiotics used in REPs are effective against bacteria implicated in endodontic infections. Triple antibiotic pastes with minocycline attain complete disinfection of immature teeth with necrotic pulps, without affecting SCAP. Experimental studies carried out in dogs support the use of antibiotics in REPs. Clinical studies report high success rates of RET using antibiotics as intracanal dressings. However, tooth discolouration is an important side effect of the use of TAP. An antibiotic paste containing only metronidazole and ciprofloxacin could be a good alternative to the use of TAP. The use of antibiotic-containing scaffolds or clindamycin-modified triple antibiotic (metronidazole, ciprofloxacin and clindamycin) polymer could be a biologically safe antimicrobial drug delivery system in REPs.

Dental students' knowledge regarding the indications for antibiotics in the management of endodontic infections.

AIM: To determine the knowledge of undergraduate Spanish dental students regarding the indications of systemic antibiotics in the management of endodontic infections. METHODOLOGY: The final year dental students from four Spanish dental schools were requested to answer a one-page questionnaire on the indications for systemic antibiotics in the treatment of endodontic infections. One hundred and seventy-five students were asked to participate in this research. Data were analysed using descriptive statistics and chi-square test. RESULTS: One hundred and four students (93.7%) completed satisfactorily the survey and were included in the study. The average duration of antibiotic therapy was 7.0 ± 2.0 days. All respondents chose amoxicillin as the first-choice antibiotic in patients with no medical allergies, alone (47%) or associated with clavulanic acid (53%). The first drug of choice for patients with an allergy to penicillin was clindamycin 300 mg (99%). For cases of irreversible pulpitis, up to 63% of students would prescribe antibiotics. For the scenario of a necrotic pulp, symptomatic apical periodontitis and no swelling, 44% would prescribe antibiotics. Almost 40% of students would prescribe antibiotics for necrotic pulps with asymptomatic apical periodontitis and a sinus tract. CONCLUSIONS: It is necessary for the Spanish schools of dentistry to improve students' knowledge about antibiotics and their indications in endodontics. Interactive education analysing real endodontic cases using problem-based learning would help students acquire better skills in prescribing antibiotics in pulp-periapical pathosis.

Slow drilling speeds for single-drill implant bed preparation. Experimental in vitro study.

AIMS: To evaluate the real-time bone temperature changes during the preparation of the implant bed with a single-drill protocol with different drill designs and different slow drilling speeds in artificial type IV bone. MATERIALS AND METHODS: For this experimental in vitro study, 600 implant bed preparations were performed in 10 bovine bone disks using three test slow drilling speeds (50/150/300 rpm) and a control drilling speed (1200 rpm). The temperature at crestal and apical areas and time variations produced during drilling with three different drill designs with similar diameter and length but different geometry were recorded with real-life thermographic analysis. Statistical analysis was performed by two-way analysis of variance. Multiple comparisons of temperatures and time with the different drill designs and speeds were performed with the Tukey's test. RESULTS: T Max values for the control drilling speed with all the drill designs (D1 + 1200; D2 + 1200; D3 + 1200) were higher compared to those for the controls for 11 ± 1.32 °C (p < 0.05). The comparison of T Max within the test groups showed that drilling at 50 rpm resulted in the lowest temperature increment (22.11 ± 0.8 °C) compared to the other slow drilling speeds of 150 (24.752 ± 1.1 °C) and 300 rpm (25.977 ± 1.2 °C) (p < 0.042). Temperature behavior at crestal and apical areas was similar being lower for slow drilling speeds compared to that for the control drilling speed. Slow drilling speeds required significantly more time to finish the preparation of the implant bed shown as follows: 50 rpm > 150 rpm > 300 rpm > control (p < 0.05). CONCLUSIONS: A single-drill protocol with slow drilling speeds (50, 150, and 300 rpm) without irrigation in type IV bone increases the temperature at the coronal and apical levels but is below the critical threshold of 47 °C. The drill design in single-drill protocols using slow speeds (50, 150, and 300 rpm) does not have an influence on the thermal variations. The time to accomplish the implant bed preparation with a single-drill protocol in type IV bone is influenced by the drilling speed and not by the drill design. As the speed decreases, then more time is required.

Survival rates and bone loss after immediate loading of implants in fresh extraction sockets (single gaps). A clinical prospective study with 4 year follow-up.

BACKGROUND: The aim of this prospective study was to report the outcome of treatment with implants inserted after tooth extraction and immediately loaded. MATERIAL AND METHODS: Fifty-six patients with single tooth loss were treated with 116 IPX Galimplant® implants with internal connections and a sandblasted, acid-etched surface. All implants were placed after tooth extraction using a flapless approach without bone regeneration, and they were then immediately loaded with cemented acrylic prostheses. After a period of three months, definitive cemented ceramic prostheses were placed. Patients were examined throughout a total of 4 years of follow-up. Marginal bone loss and survival rates were evaluated using digital periapical radiographs, taking into account clinical variables such as age, gender, smoking, history of periodontitis, etiology of extraction, placement site, diameter, and implant length. The Mann-Whitney U and Kruskal-Wallis non-parametric tests were used to compare differences between subgroups created based on the different clinical variables identified. RESULTS: Clinical results indicate an implant survival and success rate of 97.4%. Three implants were lost. Of the 116 immediate acrylic single crowns initially placed, 113 were replaced with definitive ceramic crowns after 3 months. A total of 77.8% of implants were inserted in the maxilla, while 22.2% were inserted in the mandible. No further complications were reported after the follow-up period (4 years). The mean marginal bone loss was 0.67 mm ± 0.40 mm. No differences were found among the subgroups of study patients. CONCLUSIONS: This study indicates that dental implants that are inserted after tooth extraction and immediately loaded may constitute a successful and predictable alternative implant treatment.

Buccal bone dimensions and aesthetic outcome at maxillary incisors replaced by conventional dental implants. A case series with a 5-year follow-up.

In the aesthetic field, successful replacement of a tooth with a dental implant requires blend and harmony within the existing dentition. The influence of the dimension of buccal bone at implant sites on aesthetic outcomes and the relation between buccal bone horizontal and vertical dimensions are unclear. The aim of the present study is to investigate the correlation between buccal bone thickness, buccal bone level and aesthetic outcome in conventionally placed implants ­ placed five or more years previously ­ supporting single maxillary incisors. Eight subjects with 8 implants and with periapical and parallel profile X-rays were clinically examined to assess the "Pink Aesthetic Score" (PES). Buccal bone level and thickness, together with the interproximal bone level, were measured. Implant survival was 100%. The mean time of implants function was 89.3 months (standard deviation 43, range 61-145). The mean PES value was 9.4. The mean interproximal bone level was located 1.3 mm apically to the implant abutment junction, while the corresponding buccal value was 1.6 mm. Buccal bone was mostly absent at the implant abutment junction; 2 and 4 mm apically respect to the junction the thickness was on average 0.44 and 0.89 mm, respectively. The dimension of buccal bone level was correlated to the buccal bone thickness at 2mm-level, to the interproximal bone level and to the soft tissue contour score. Conventional implant placement in pristine bone might lead to satisfactory long-term aesthetic results. The level of the facial mucosa and appearance of the alveolar process might emerge as critical aspects.

A novel CAD/CAM-based surgical template for mandibular osteoplasty and guided implant insertion.

Bone shaping is often a necessary procedure prior to implant insertion in mandibular full-arch rehabilitations. Adopting guided surgery procedures is necessary to use two distinct templates: one for bone shaping, a second for guided implant insertion. The present report describes the case of a 60-year-old patient requiring a full-arch, immediately loaded implant-supported mandibular rehabilitation. A CAD/CAM-bone supported surgical template for osteoplasty was used to develop a template for guided implant during an all-on-six immediate-loaded computer-aided implant surgery. The report describes the feasibility, accuracy and usefulness of this double, CAD/CAM developed, surgical template.

Diabetes mellitus, periapical inflammation and endodontic treatment outcome.

The possible connection between chronic oral inflammatory processes, such as apical periodontitis and periodontal disease (PD), and systemic health is one of the most interesting aspects faced by the medical and dental scientific community. Chronic apical periodontitis shares important characteristics with PD: 1) both are chronic infections of the oral cavity, 2) the Gram-negative anaerobic microbiota found in both diseases is comparable, and 3) in both infectious processes increased local levels of inflammatory mediators may have an impact on systemic levels. One of the systemic disorders linked to PD is diabetes mellitus (DM); is therefore plausible to assume that chronic apical periodontitis and endodontic treatment are also associated with DM. The status of knowledge regarding the relationship between DM and endodontics is reviewed. Upon review, we conclude that there are data in the literature that associate DM with a higher prevalence of periapical lesions, greater size of the osteolityc lesions, greater likelihood of asymptomatic infections and worse prognosis for root filled teeth. The results of some studies suggest that periapical disease may contribute to diabetic metabolic dyscontrol.

Study of external root resorption during orthodontic treatment in root filled teeth compared with their contralateral teeth with vital pulps.

AIM: To determine whether root filled teeth and those with vital pulps exhibit a similar degree of external root resorption (ERR) as a consequence of orthodontic treatment. METHODOLOGY: The study sample consisted of 77 patients, with a mean age of 32.7 +/- 10.7 years, who had one root filled tooth before completion of multiband/bracket orthodontic therapy for at least 1 year. For each patient, digital panoramic radiographs taken before and after orthodontic treatment were used to determine the proportion of external root resorption (PRR), defined as the ratio between the root resorption in the root filled tooth and that in its contralateral tooth with a vital pulp. The student's t-test, anova and logistic regression analysis were used to determine statistical significance. RESULTS: The mean PRR was 1.00 +/- 0.13, indicating that, in the total sample, there were no significant differences in root resorption in the root filled teeth and their contralateral teeth with vital pulps. Multivariate logistic regression analysis suggested that PRR was significantly greater in incisors (P = 0.0014; odds ratio = 6.2885, C.I. 95% = 2.0-19.4), compared to other teeth, and in women (P = 0.0255; odds ratio = 4.2, C.I. 95% = 1.2-14.6), compared to men. CONCLUSIONS: There was no significant difference in the amount or severity of external root resorption during orthodontic movement between root filled teeth and their contralateral teeth with vital pulps.

Pattern of antibiotic prescription in the management of endodontic infections amongst Spanish oral surgeons.

AIM: To identify antibiotic prescription practices in the treatment of endodontic infections amongst Spanish oral surgeons. METHODOLOGY: Members of the Spanish Oral Surgery Society (SECIB) were surveyed on antibiotic prescription on six different pulpal and periapical diagnoses. A total of 200 questionnaires were delivered with 127 returned (64%). RESULTS: The average duration of antibiotic therapy was 7.0 +/- 1.0 days. Ninety five percent of respondents selected amoxicillin as the first choice antibiotic in patients with no medical allergies, alone (34%) or associated to clavulanate (61%). The first drug of choice for patients with an allergy to penicillins was clindamycin 300 mg (65%), followed by azithromycin (15%) and metronidazole-spiramycin (13%). For cases of irreversible pulpitis, 86% of respondents prescribed antibiotics. For the scenario of a necrotic pulp, acute apical periodontitis and no swelling, 71% prescribed antibiotics. Almost 60% of respondents prescribed antibiotics for necrotic pulps with chronic apical periodontitis and a sinus tract; in this clinical situation, odontologists prescribed more frequently antibiotics compared to stomatologists (P = 0.0080; odds ratio = 8.0; C. I. 95% = 1.7-37.1). CONCLUSIONS: The majority of the members of the SECIB were selecting the appropriate antibiotic for use in endodontic infections, but there are still many who are prescribing antibiotics inappropriately. The use of antibiotics for minor infections, or in some cases in patients without infections, could be a major contributor to the world problem of antimicrobial resistance.

Horizontal augmentation of the maxillary alveolar ridge to change the prosthetic profile: Clinical and radiological results of a retrospective study.

BACKGROUND: In this retrospective study, we aimed to analyze the clinical and radiological results of compensating the long-term deficiencies in hard and soft tissues of edentulous patients by placing dental implants and performing a horizontal ridge augmentation. MATERIAL AND METHODS: We treated patients with edentulous maxillaries (Cawood-Howell type III or IV) by combining 4 implants, or 6 implants, or using zygomatic and conventional anterior implants as appropriate. Simultaneously, horizontal ridge augmentation was performed by combining autologous bone with Bio-Oss and membranes. RESULTS: A total of 14 zygomatic and 80 standard implants were used for the rehabilitations in 16 edentulous patients. The success rates were 93.75% and 85.71% for the standard and zygomatic implants, respectively. Also, respective gains of 5.79mm and 3.25mm were obtained at the levels of the midsagittal line and canines, with respective resorption rates of 10% and 8.6% after 20months. CONCLUSION: The millimeters gained by performing a horizontal augmentation optimizes the relation between the implant position and the prosthetic profile. This allows the different prostheses to be selected and for rehabilitation to be optimized. In this way, mucosal coverage can be avoided and fixed prosthetic design can be enhanced.

Pain associated with root canal treatment.

AIM: To determine the pain experienced by patients during root canal treatment and to correlate with age and gender, pulpal diagnosis, previous periapical status, dental characteristics and length of treatment. METHODOLOGY: One hundred and seventy-six patients (68 men and 108 women), with ages ranged from 6 to 83 years, were randomly recruited. Patients completed a 10-cm visual analogue scale (VAS) that ranked the level of pain experienced during root canal treatment. RESULTS: The mean pain level during root canal treatment was 1.2 +/- 0.8 in a VAS between 0 and 10. Fifty-four per cent of patients did not experience pain. There were no significant differences in relation to gender or age groups. Mandibular teeth had a significantly (P < 0.05) higher percentage incidence of pain in comparison with maxillary teeth. Pain was absent in 63% of anterior teeth compared with 44% in posterior ones (P < 0.01). Interventions shorter than 45 min resulted in a significantly higher percentage of pain absence (P < 0.05). Root canal treatment was significantly (P < 0.05) more painful in teeth with irreversible pulpitis and acute apical periodontitis compared to the group with necrotic pulps and chronic apical periodontitis (P = 0.049). CONCLUSIONS: Root canal treatment in teeth with irreversible pulpitis and acute apical periodontitis was more painful. Age, tooth type and length of the treatment were factors associated with increased risk for pain experienced during the procedure. Knowledge of pain levels endured by patients will allow dentists to decide when to use supplemental local anaesthesia.

High prevalence of apical periodontitis amongst smokers in a sample of Spanish adults.

AIM: To study the prevalence of apical periodontitis in smoker and nonsmoker patients. METHODOLOGY: In a cross-sectional study, the records of 180 subjects, 109 smokers and 71 nonsmokers, were examined. All participants underwent a full-mouth radiographic survey incorporating 14 periapical radiographs. The periapical region of all teeth, excluding third molars, was examined. Periapical status was assessed using the Periapical Index score. Statistical analyses were conducted using the Cohen's Kappa test, analysis of variance and logistic regression. RESULTS: Apical periodontitis in at least one tooth was found in 74% of smokers and in 41% of nonsmokers (P < 0.01; odds ratio = 4.2; 95% C. I. = 2.2-7.9). Amongst smoker patients 5% of the teeth had apical periodontitis, whereas in nonsmoker subjects 3% of teeth were affected (P = 0.008; odds ratio = 1.5; 95% C. I. = 1.1-2.1). The percentage of root filled teeth in smoker and nonsmoker patients was 2.5% and 1.5%, respectively (P < 0.05; odds ratio = 1.7; C. I. 95% = 1.0-2.6). CONCLUSIONS: In this study population, smoking was significantly associated with a greater frequency of root canal treatment and with an increased prevalence of apical periodontitis.

Investigación clínica a largo plazo del tratamiento con implantes dentales / Long-term clinical research of treatment with dental implants

La implantología oral clínica ha evolucionado significativamente durante las últimas décadas. El desarrollo de los aspectos diagnósticos, quirúrgicos y prostodóncicos ha mejorado la predictibilidad de la oseointegración y los resultados clínicos a largo plazo del tratamiento con implantes. Además, algunos criterios de condiciones clínicas y radiográficas se han incorporado al concepto de éxito, como el nivel de los implantes, los tejidos periimplantarios, el nivel de la prótesis y el grado de satisfacción de los pacientes. La evidencia científica ha demostrado que el tratamiento con implantes es una excelente opción para la rehabilitación de los pacientes con parcial y total edentulismo. De hecho, los estudios a largo plazo reflejan el éxito de las rehabilitaciones fijas, sobredentaduras, puentes fijos y coronas unitaria. Sin embargo, algunas complicaciones biológicas y prostéticas han definido los conceptos diferentes de éxito y supervivencia de los implantes dentales. Conclusiones: Este trabajo indica que las restauraciones sobre implantes dentales en la rehabilitación de los pacientes parcial y totalmente edéntulos constituye un tratamiento odontológico con resultados clínicos a largo plazo con un elevado éxito. (AU)

Clinical implant dentistry has evolved significantly during last decades. The development of diagnostic, surgical and prosthetic aspects has improved the predictability of osseointegration and long-term clinical outcomes of the implant treatment. Moreover, several criteria of clinical and radiographic conditions have been incorporated in the concept of implant success, as implant level, peri-implant tissues, prosthetic level, and patient satisfaction. The scientific evidence of the literature demonstrates that implant treatment is an excellent option for the rehabilitation of patients with partial and total edentulism. In fact, long-term studies are reported the success of fixed total rehabilitation, overdentures, fixed bridges and single crowns. However, some biological and technical complications are defined the different concepts of success and survival of prosthetic and dental implants. Conclusions: This paper indicates that restorations with dental implants in the rehabilitation of partially and totally edentulous patients constitute a dental treatment with long-term clinical outcomes with a high success. (AU)

El tratamiento con implantes mediante la elevacion transalveolar del seno maxilar en pacientes geriatricos / Implant treatment by transalveolar maxillary sinus elevation in geriatric patients

Introducción: El objetivo del presente estudio era mostrar los resultados clínicos del tratamiento del maxilar superior posterior con implantes colocados mediante la técnica de elevación transalveolar del seno maxilar en pacientes geriátricos. Pacientes y Métodos: 24 pacientes geriátricos (15 hombres y 9 mujeres) con pérdidas dentales maxilares fueron tratados con 28 implantes diferentes colocados mediante la técnica de elevación sinusal transalveolar para su posterior rehabilitación prostodóncica. Los implantes fueron cargados después de un periodo de cicatrización de 6 meses. Resultados: Los hallazgos clínicos indican una supervivencia y éxito de los implantes del 96,4%. En un paciente de los 24 tratados (4,2%) se perdió un implante (3,6%). La altura ósea residual media fué de 6,38 ±1,10 mm (rango:5-10 mm). La ganancia media de hueso vertical fué de 4,40 ±1,15 mm (rango: 2-7 mm). 67,8% de los implantes se insertaron en localización molar y el 32,2% en la localización premolar. Se utilizaron biomateriales en el 97,8% de los implantes. Se realizaron coronas unitarias en 20 pacientes (83,3%), puentes fijos en 3 pacientes (12,5%) y una sobredentadura con bolas en un paciente (4,2%). El seguimiento medio de los pacientes estudiados ha sido de 64,2 ±8,6 meses con un rango entre 50 y 82 meses. Conclusiones: Este estudio indica que el tratamiento con implantes dentales mediante la elevación transalveolar del seno maxilar superior en pacientes geriátricos, constituye una terapéutica implantológica con una elevada tasa de éxito. (AU)

Introduction: The aim of this study was to report the clinical findings of treatment of posterior maxilla with dental implants inserted by transalveolar sinus elevation in geriatric patients. Patients and Methods: 24 geriatric patients (15 males and 9 females) with maxillary tooth loss were treated with 28 different implants placed by transalveolar sinus elevation for rehabilitation of posterior maxilla. Implants were loaded after a healing free-loading period of 6 months. Results: Clinical findings indicate a survival and success rate of implants of 96.4%. In one patient of 24 treated patients (4.2%), one implant was lost (3.6%). The mean residual height was 6.38 mm±1.10 mm (range: 5-10 mm). The mean elevation height was 4.40 mm±1.10 mm (range: 2-7 mm). 67.8% of implants were inserted in molar and 32.2% in premolar localization. Bone substitutes were used in 97.8% of implants. Twenty patients (83.3%) were restored with single crowns, 3 patients with fixed bridges (12.5%) and one patient (4.2%) with overdenture. The mean follow-up period of treated patients was 64.2 ±8.6 months (range: 50-82 months). Conclusions: This study indicates that treatment with dental implants placed by transalveolar sinus elevation in geriatric patients constitute an implant treatment with a high success rate. (AU)

El tratamiento con implantes insertados en localizaciones alveolares regeneradas con betafosfato tricalcico / Treatment with implants inserted in regenerated alveolar sites with beta-tricalcium phosphate

Introducción: El objetivo del presente estudio era mostrar los resultados del tratamiento con implantes dentales insertados en área regeneradas con betafosfato tricálcico. Métodos: 48 pacientes con pérdidas dentales parciales fueron tratados con 97 implantes Galimplant ® en área regeneradas con betafofato tricálcico Osteoblast ®. Diversas técnicas fueron realizadas (implantes inmediata en alveolos postextracción; expansión ósea con expansores u osteotomos y elevación transalveolar / lateral del seno maxilar). Los implantes fueron cargados después de un periodo de cicatrización de 6 meses. Resultados: 48 pacientes fueron tratados con implantes, con una edad media de 37,4 años (rango: 22-63 años). En 16 pacientes (33,3%) se realizó la inserción de implantes de forma inmediata en alveolos postextracción. En 9 pacientes (18,7%) se realizó la técnica de expansión ósea con expansores u osteotomos. En 10 pacientes (20,8%) se realizó la elevación transalveolar del seno maxilar. En 13 pacientes (27,1%) la elevación sinusal fué lateral. En la investigación realizada se perdieron 4 implantes de los 97 insertados (4,1%). 2 implantes fueron fracasos inmediatos o precoces (2,06%) ya que se perdieron, durante la fase de cicatrización, al no conseguir la oseointegración. Los 2 fracasos tardíos fueron por periimplantitis (2,06%). La pérdida media de hueso marginal fué de 1,34 ±1,19 mm. Se realizaron un total de 78 prótesis (100%), 61 coronas unitarias (78,2%) y 17 puentes fijos (21,8%). El periodo de seguimiento clínico ha sido de 5 años. Conclusiones: Este estudio indica que los implantes dentales pueden ser insertados con éxito en las áreas regeneradas con betafosfato tricálcico. (AU)

Introduction: The aim of this study was to report the outcome of treatment with dental implants inserted in regenerated sites with beta-tricalcium phosphate. Methods: 48 patients with partial tooth loss were treated with 97 Galimplant ® implants in regenerated sites with beta-tricalcium phosphate Osteoblast ®. Patients were treated with several surgical tecniques (immediate implants in fresh sockets, alveolar ridge expansion, transalveolar /lateral sinus elevation). Implants were loaded after a healing free-loading period of 6 months. Results: 48 patients were treated, with a mean age of 37.4 years (range: 22-63 yr), with 97 implants. Sixteen patients (33.3%) were treated with immediate implants in fresh sockets; in 9 patients (18.7%), alveolar ridge expansion were used; and 10 patients (20.8%) were treated with transalveolar or lateral sinus elevation (13 patients; 27.1%). 2 implants (2,06%) were lost during the healing period and two implant (2,06%) was lost by peri-implantitis. Marginal bone loss was 1.34 ±1.19 mm. A total of 78 prostheses were realized, 61 single crowns (78.2%) and 17 fixed bridges (21.8%). The follow-up period was of 5 years. Conclusions: This study indicate that dental implants can be inserted with success in regenerated sites with beta-tricalcium phosphate. Conclusions: This study indicates that treatment with dental implants placed by transalveolar sinus elevation in geriatric patients constitute an implant treatment with a high success rate. (AU)

La pérdida ósea marginal en la rehabilitación fija con implantes en pacientes edéntulos. Un estudio a 3 años / Marginal bone loss on fixed rehabilitation with implants in edentulous patients. A 3-year study

Introducción: El objetivo del presente estudio era mostrar los resultados de la pérdida ósea marginal en el tratamiento con rehabilitación fija mediante implantes dentales en pacientes edéntulos totales. Material y Métodos: 24 pacientes edéntulos fueron tratados con 210 implantes KTX ® con superficie arenada y grabada para la rehabilitación total fija. Los implantes fueron cargados inmediatamente en el mismo día de la cirugía. El seguimiento clínico medio fue de 37,1 ±14,6 meses. Resultados: Los hallazgos clínicos indican una supervivencia y éxito de los implantes del 99,5%. Los pacientes fueron rehabilitados con 33 prótesis totales fijas atornilladas. Complicaciones biológicas fueron observadas en el 50% de los pacientes y las complicaciones prostodóncicas en el 4,2% de los pacientes. La pérdida ósea marginal fue de 1,33± 0,77 mm. La pérdida ósea marginal no estuvo relacionada significativamente con la edad, sexo, hábito de fumar, antecedentes médicos, tipos de prótesis y seguimiento clínico. Conclusiones: Este estudio indica que la rehabilitación fija mediante implantes dentales en pacientes edéntulos totales constituye una terapéutica con éxito con una pérdida ósea marginal frecuente. (AU)

Introduction: The aim of this study was to report the outcome of marginal bone loss in the treatment of fully edentulous patients with fixed prostheses supported with dental implants. Material & Methods: 24 edentulous patients were treated with 210 KTX ® sandblasted and acid surface implants for fixed maxilla/mandible rehabilitation. Implants were immediately loaded in the same day of the surgery. The mean follow-up was 37.1 ±14.6 months. Results: Clinical results indicate a survival and success rate of implants of 99.5%. One implant was lost during the follow-up period. The patients were restored with 33 screw fixed rehabilitations. Biological complications were observed in 50% of patients and technical complications in 4.2% of patients. Mean marginal bone loss was 1.33 ± 0. 77 mm. Marginal bone loss are not significantly related with age, gender, smoking, medical background, types of prostheses, and clinical follow-up. Conclusions: This study indicates that fixed rehabilitations by dental implants in totally edentulous patients constitute a successful treatment with a frequent marginal bone loss. (AU)