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Clinical Oral Investigations Oct 2021This systematic review assesses dental implant survival, calculates the incidence rate of osteoradionecrosis, and evaluates risk factors in irradiated head and neck... (Meta-Analysis)
Meta-Analysis Review
OBJECTIVES
This systematic review assesses dental implant survival, calculates the incidence rate of osteoradionecrosis, and evaluates risk factors in irradiated head and neck cancer patients.
MATERIALS AND METHODS
Various databases (e.g., Medline/Embase using Ovid) and gray literature platforms were searched using a combination of keywords and subject headings. When appropriate, meta-analysis was carried out using a random effects model. Otherwise, pooled analysis was applied.
RESULTS
A total of 425 of the 660 included patients received radiotherapy. In total, 2602 dental implants were placed, and 1637 were placed in irradiated patients. Implant survival after an average follow-up of 37.7 months was 97% (5% confidence interval, CI 95.2%, 95% CI 98.3%) in nonirradiated patients and 91.9% (5% CI 87.7%, 95% CI: 95.3%) after an average follow-up of 39.8 months in irradiated patients. Osteoradionecrosis occurred in 11 cases, leading to an incidence of 3% (5% CI 1.6%, 95% CI 4.9%). The main factors impacting implant survival were radiation and grafting status, while factors influencing osteoradionecrosis could not be determined using meta-analysis.
CONCLUSION
Our data show that implant survival in irradiated patients is lower than in nonirradiated patients, and osteoradionecrosis is-while rare-a serious complication that any OMF surgeon should be prepared for. The key to success could be a standardized patient selection and therapy to improve the standard of care, reduce risks and shorten treatment time.
CLINICAL RELEVANCE
Our analysis provides further evidence that implant placement is a feasible treatment option in irradiated head and neck cancer patients with diminished oral function and good long-term cancer prognosis.
Topics: Dental Implantation, Endosseous; Dental Implants; Head and Neck Neoplasms; Humans; Osteoradionecrosis
PubMed: 34401944
DOI: 10.1007/s00784-021-04065-6 -
Strahlentherapie Und Onkologie : Organ... Mar 2022To seek evidence for osteoradionecrosis (ORN) after dental extractions before or after intensity-modulated radiotherapy (IMRT) for head and neck cancer (HNC). (Meta-Analysis)
Meta-Analysis Review
OBJECTIVE
To seek evidence for osteoradionecrosis (ORN) after dental extractions before or after intensity-modulated radiotherapy (IMRT) for head and neck cancer (HNC).
METHODS
Medline/PubMed, Embase, and Cochrane Library were searched from 2000 until 2020. Articles on HNC patients treated with IMRT and dental extractions were analyzed by two independent reviewers. The risk ratios (RR) and odds ratios (OR) for ORN related to extractions were calculated using Fisher's exact test. A one-sample proportion test was used to assess the proportion of pre- versus post-IMRT extractions. Forest plots were used for the pooled RR and OR using a random-effects model.
RESULTS
Seven of 630 publications with 875 patients were eligible. A total of 437 (49.9%) patients were treated with extractions before and 92 (10.5%) after IMRT. 28 (3.2%) suffered from ORN after IMRT. ORN was associated with extractions in 15 (53.6%) patients, eight related to extractions prior to and seven cases related to extractions after IMRT. The risk and odds for ORN favored pre-IMRT extractions (RR = 0.18, 95% CI: 0.04-0.74, p = 0.031, I = 0%, OR = 0.16, 95% CI: 0.03-0.99, p = 0.049, I = 0%). However, the prediction interval of the expected range of 95% of true effects included 1 for RR and OR.
CONCLUSION
Tooth extraction before IMRT is more common than after IMRT, but dental extractions before compared to extractions after IMRT have not been proven to reduce the incidence of ORN. Extractions of teeth before IMRT have to be balanced with any potential delay in initiating cancer therapy.
Topics: Head and Neck Neoplasms; Humans; Incidence; Osteoradionecrosis; Radiotherapy, Intensity-Modulated; Tooth Extraction
PubMed: 35029717
DOI: 10.1007/s00066-021-01896-w -
International Journal of Radiation... Apr 2021Osteoradionecrosis is a relatively rare but potentially morbid and costly complication of radiation therapy for head and neck cancer. Multidisciplinary diagnosis and...
Osteoradionecrosis is a relatively rare but potentially morbid and costly complication of radiation therapy for head and neck cancer. Multidisciplinary diagnosis and treatment are essential. Despite evidence guiding individual aspects of care for osteoradionecrosis, there is a lack of broad consensus on the overall diagnosis and management of this condition. This study comprehensively reviews the literature, with a focus on the past 10 years, to guide evaluation and treatment.
Topics: Bone Density Conservation Agents; Consensus; Head and Neck Neoplasms; Humans; Incidence; Mandible; Mandibular Osteotomy; Osteoradionecrosis; Ozone; Proton Therapy; Radiotherapy Dosage; Radiotherapy, Intensity-Modulated; Risk Factors; Teriparatide; Tooth Extraction; Ultrasonic Therapy
PubMed: 33412258
DOI: 10.1016/j.ijrobp.2020.12.043 -
Gerodontology Jun 2020It is strongly recommended to extract teeth with poor prognosis in head and neck cancer (HaNC) patients prior starting treatment with radiotherapy to avoid need for... (Review)
Review
BACKGROUND
It is strongly recommended to extract teeth with poor prognosis in head and neck cancer (HaNC) patients prior starting treatment with radiotherapy to avoid need for extraction post-radiotherapy and prevent development of osteoradionecrosis (ORN). Dental extraction means that patients are often left with insufficient teeth leading to psychological problems and reducing their quality of life post-radiotherapy. Some clinicians do not advocate the use of dentures in HaNC patients claiming that dentures might lead to soft tissue irritation followed by ORN when constructed on irradiated jaws.
AIMS
This systematic review aimed to investigate the existing evidence regarding the impact of denture use on the development of ORN in HaNC patients post-radiotherapy.
METHODS
This systematic review followed the Preferred Reporting Item for Systematic Review and Meta-analyses (PRISMA) guideline. Three database systems were used: Ovid Medline, EMBASE and PsycINFO. PROSPERO was searched for ongoing or recently completed systematic reviews. The https://ClinicalTrials.gov was searched for ongoing or recently completed trials. The Joanna Briggs Institute critical appraisal tools were used to assess quality of studies being reviewed.
RESULTS
Only three retrospective case-control studies were included. Numbers of participants included in the three studies are limited with incomparable types of mucosal dentures. None of the studies described the method of measurement of the exposure (denture use) in a standard, validated and reliable way.
CONCLUSION
The three included studies suggested no link between denture use and development of ORN. However, very little evidence exists and the robustness of the studies is questionable. Well-powered studies are needed.
Topics: Dentures; Head and Neck Neoplasms; Humans; Osteoradionecrosis; Quality of Life; Retrospective Studies
PubMed: 31886587
DOI: 10.1111/ger.12456 -
Oral Surgery, Oral Medicine, Oral... Jan 2012This systematic review aimed to answer the clinical question, "What is the current risk of developing osteoradionecrosis of the jaws among irradiated head and neck... (Review)
Review
OBJECTIVE
This systematic review aimed to answer the clinical question, "What is the current risk of developing osteoradionecrosis of the jaws among irradiated head and neck cancer patients?"
STUDY DESIGN
A systematic review of published English-language randomized controlled trials on the outcome of radiation therapy was performed via Medline and Embase databases. Data on osteoradionecrosis/bone toxicity were collected and analyzed.
RESULTS
Twenty-two articles reporting on a total of 5,742 patients were selected for final review based on strict eligibility criteria. An estimated 2% of the head and neck-irradiated patients are at risk of developing osteoradionecrosis. Patients receiving adjunctive radiotherapy, accelerated fractionation without dose reduction, and chemoradiotherapy show no increase in osteoradionecrosis risk. Accelerated fractionation with dose reduction is associated with a reduced risk, whereas hyperfractionation shows elevated risk of developing osteoradionecrosis.
CONCLUSIONS
The risk of developing osteoradionecrosis among the irradiated head and neck cancer patient has significantly declined in recent years.
Topics: Adult; Chemoradiotherapy; Cranial Irradiation; Dental Care for Chronically Ill; Head and Neck Neoplasms; Humans; Jaw Diseases; Osteoradionecrosis; Radiotherapy Dosage; Randomized Controlled Trials as Topic; Risk Factors
PubMed: 22669065
DOI: 10.1016/j.tripleo.2011.07.042 -
Oral Surgery, Oral Medicine, Oral... May 2018The purpose of this study was to evaluate the healing benefit provided by the antioxidant and antifibrotic properties of pentoxifylline-tocopherol or... (Review)
Review
OBJECTIVE
The purpose of this study was to evaluate the healing benefit provided by the antioxidant and antifibrotic properties of pentoxifylline-tocopherol or pentoxifylline-tocopherol-clodronate in combination therapy for osteoradionecrosis.
STUDY DESIGN
We searched for relevant reports in PubMed by using a combination of "osteoradionecrosis" and the following keywords: "pentoxifillyne," "tocopherol," "vitamin E," or "clodronate." We considered articles in English or Spanish, with no limitations on the publication date.
RESULTS
The combination of pentoxifylline plus tocopherol with or without clodronate was found to be effective for the treatment of mandibular osteoradionecrosis, although data were generally scarce and mostly came from retrospective case series.
CONCLUSIONS
This drug therapy is well tolerated and could be promising for the treatment of mandibular osteoradionecrosis, but prospective randomized controlled clinical trials are needed for further clarification.
Topics: Clodronic Acid; Drug Combinations; Head and Neck Neoplasms; Humans; Mandibular Diseases; Osteoradionecrosis; Pentoxifylline; Tocopherols
PubMed: 29550081
DOI: 10.1016/j.oooo.2018.02.004 -
Oral Surgery, Oral Medicine, Oral... Jul 2023This systematic review aimed to determine whether the pentoxifylline and tocopherol (PENTO) protocol effectively reduce the risk of osteoradionecrosis (ORN) in patients... (Review)
Review
PURPOSE
This systematic review aimed to determine whether the pentoxifylline and tocopherol (PENTO) protocol effectively reduce the risk of osteoradionecrosis (ORN) in patients undergoing tooth extraction after head and neck radiotherapy.
METHODS
We searched PubMed, SCOPUS, LILACS, EMBASE, Web of Science, and Cochrane databases up to August 2022. We considered only studies that included patients diagnosed with head and neck cancer undergoing tooth extraction with PENTO prophylaxis after radiotherapy.
RESULTS
Of the 642 studies identified, 4 were included. Across the included studies, 387 patients had 1871 teeth extracted while on PENTO prophylaxis. The interval of the PENTO protocol differed among the studies included. Overall, a total of 12 (3.1%) patients had ORN, whereas at the individual tooth level analysis the ORN rate was 0.9%.
CONCLUSIONS
Insufficient evidence exists to promote using the PENTO protocol before dental extractions to prevent ORN.
Topics: Humans; Tocopherols; Pentoxifylline; Osteoradionecrosis; Head and Neck Neoplasms; Tooth Extraction; Retrospective Studies
PubMed: 36882364
DOI: 10.1016/j.oooo.2023.01.005 -
Cancers Nov 2021Teeth extractions before or after radiotherapy (RT) could be procedures at high risk for osteoradionecrosis (ORN) onset. This systematic review was performed to... (Review)
Review
UNLABELLED
Teeth extractions before or after radiotherapy (RT) could be procedures at high risk for osteoradionecrosis (ORN) onset. This systematic review was performed to investigate the ORN incidence following teeth extractions during and after RT for head and neck (H&N) cancer and to evaluate any other possible risk factor.
METHODS
This systematic review was conducted according to PRISMA protocol, and the PROSPERO registration number was CRD42018079986. An electronic search was performed on the following search engines: PubMed, Scopus, and Web of Science. A cumulative meta-analysis was performed.
RESULTS
Two thousand two hundred and eighty-one records were screened, and nine were finally included. This systematic review revealed an ORN incidence of 5.8% (41 patients out of 462, 95% CI = 2.3-9.4); 3 ORN developed in the maxilla. No other clinical risk factors were detected.
CONCLUSION
Post-RT teeth extractions represent a major risk factor for ORN development, especially in the mandible, with a diminishing trend in the last years. Further research on other possible risk factors might improve this evidence.
PubMed: 34830954
DOI: 10.3390/cancers13225798 -
Medicina Oral, Patologia Oral Y Cirugia... May 2023Osteoradionecrosis of the jaws (ORNJ) is a severe and challenging complication of head and neck radiation therapy. Despite its aggressiveness and controversy respect to...
BACKGROUND
Osteoradionecrosis of the jaws (ORNJ) is a severe and challenging complication of head and neck radiation therapy. Despite its aggressiveness and controversy respect to its efficacy, surgical intervention remains the main treatment modality. Nevertheless, due to advances in the understanding of ORNJ physiopathology, new treatment alternatives such as the combination of pentoxifylline with tocopherol (PENTO) have emerged. The aim of this systematic review was to assess the reported efficacy of PENTO for the treatment of ORNJ. Material and Methods: Studies were search using Pubmed, The Cochrane Library, Scopus, and Web of Science data bases following the PRISMA guidelines. Inclusion criteria were cohort, case series, randomized or non-randomized clinical studies published in English including human subjects who received PENTO as treatment for ORN of the jaws. Results: Eleven articles met the inclusion criteria and were included for data analysis. All studies reported patients with complete mucosal coverage with no exposed bone (considered healthy) after PENTO treatment, ranging from 16.6% to 100% of the patients, depending on the study. Clinical improvement or disease stabilization was reported between 7.6% and 66.6% of studied individuals, while disease progression was seen in only 5 studies involving 7.6 - 32% of patients.
CONCLUSIONS
PENTO treatment achieved a complete disease control in a significant number of patients in all studies. However, there is no standardized protocol for administering the therapy. It is necessary to determine the pharmacological doses and to evaluate the benefits of adding antibiotics and clodronate. Good quality clinical trials are needed to develop a successful algorithm for the management of ORN of the jaws.
Topics: Humans; Tocopherols; Pentoxifylline; Osteoradionecrosis; Head and Neck Neoplasms; Jaw
PubMed: 36641743
DOI: 10.4317/medoral.25729 -
The Annals of Otology, Rhinology, and... May 2019The aim of this study was to summarize the effectiveness of steroids in the prevention of osteoradionecrosis of the head and neck.
OBJECTIVE
The aim of this study was to summarize the effectiveness of steroids in the prevention of osteoradionecrosis of the head and neck.
DATA SOURCES
PubMED, MEDLINE, Embase, Google Scholar, and Cochrane trial registries.
METHODS
A systematic review of these data sources was performed through September 2018 using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Included were English-language studies evaluating patients of all age groups diagnosed with head and neck cancer who underwent radiation therapy while receiving peritreatment steroids compared with those who did not receive steroids.
RESULTS
Two retrospective cohort studies were identified for qualitative review. On the basis of analysis of 25 328 participants (36-82 years of age) with head and neck cancer who underwent radiation therapy, the use of peritreatment steroids was associated with a significantly lower risk for osteoradionecrosis in both studies, with a hazard ratio of 0.74 (95% confidence interval, 0.59-0.94; P = .012) and a relative risk of 0.04 (95% confidence interval, 0.003-0.560; P = .017). Meta-analysis was precluded by clinical and statistical heterogeneity. Overall, the studies were of limited quality with high risk for bias and poor methodology.
CONCLUSIONS
Limited retrospective data suggest that steroids are predictive of a reduced risk for osteoradionecrosis; however, no definitive conclusions can be made given the poor quality of the available literature. Well-designed, comparison-controlled trials are needed to clarify the promising role of steroids in the prevention of osteoradionecrosis of the head and neck.
Topics: Glucocorticoids; Head and Neck Neoplasms; Humans; Osteoradionecrosis
PubMed: 30688080
DOI: 10.1177/0003489419826595