|LETTER TO EDITOR
|Year : 2020 | Volume
| Issue : 2 | Page : 408-409
Clinical aspects and considerations in patients with medication-induced osteonecrosis of the jaw: A commentary
Adarsh Kudva1, Mathangi Kumar2
1 Department of Oral and Maxillofacial Surgery, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
2 Department of Oral Medicine and Radiology, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
|Date of Submission||14-Mar-2020|
|Date of Decision||17-Mar-2020|
|Date of Acceptance||18-Mar-2020|
|Date of Web Publication||19-Jun-2020|
Department of Oral and Maxillofacial Surgery, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal - 576 104, Karnataka
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Kudva A, Kumar M. Clinical aspects and considerations in patients with medication-induced osteonecrosis of the jaw: A commentary. Cancer Res Stat Treat 2020;3:408-9
|How to cite this URL:|
Kudva A, Kumar M. Clinical aspects and considerations in patients with medication-induced osteonecrosis of the jaw: A commentary. Cancer Res Stat Treat [serial online] 2020 [cited 2020 Sep 18];3:408-9. Available from: http://www.crstonline.com/text.asp?2020/3/2/408/287275
We would like to congratulate Waghmare et al. for their interesting publication titled, “The mystery of the jaw pain.” This case delivers an important clinical message to the medical and dental practitioners that should be considered in patients with a history of bisphosphonate therapy. However, we have a few queries and would appreciate if the authors could provide clarifications on the same.
- The authors have stated that the patient was administered an epidural steroid injection. This aspect is of clinical significance as the literature supports that osteonecrosis could be a complication in patients with concurrent bisphosphonate and steroid therapies 
- We fail to understand what the authors meant by “above-mentioned systemic therapy” in the sentence, “The patient continued the above-mentioned systemic therapy and was on 3-month follow-up with routine laboratory investigations including renal function test.” We are curious to know which therapy the authors are referring to
- The history reveals that the patient had undergone tooth extraction. Was it a lone standing tooth? Furthermore, was it a maxillary or mandibular tooth? It is to be noted that prophylactic dental care should be offered to all patients who are planned for therapy with bisphosphonates and denosumab 
- Imaging plays a major role in assessing the extent and effect of osteonecrosis. Marxsuggested that panoramic radiographs are an excellent screening tool for routine dental assessment of these patients. However, more advanced imaging modalities such as cone beam computed tomography and computed tomography depict typical features such as pathologic fractures, narrowing of the marrow space, and involvement of the inferior alveolar canal. Furthermore, magnetic resonance imaging of all osteonecrosis cases show hypointense and hyperintense areas on T1- and T2-weighted images, respectively 
- Route of administration of bisphosphonates is an important consideration that could influence the risk of occurrence of osteonecrosis. It has been observed that intravenous bisphosphonates pose a greater risk to patients for the development of osteonecrosis than oral bisphosphonates. However, regardless of the route of administration, minimal risk for the development of osteonecrosis of the jaw always exists 
- Bisphosphonates get incorporated into the skeleton and exert their antiresorptive effect for an extended period, even after discontinuation of the drug. Therefore, it is reasonable to recommend a drug holiday, during which the risk of adverse effects is decreased, but the antiresorptive effect persists. Patients who can afford a drug holiday should be aptly chosen taking into consideration factors like the duration of the bisphosphonate therapy and drug holiday. Furthermore, most importantly, the indication for which the medication is taken must be considered, and the drug holiday must be planned after consultation with a medical oncologist or physician 
- Medication-related osteonecrosis of the jaw refers to the condition that manifests clinically as exposure of bone, which may or may not be symptomatic. Drugs implicated in osteonecrosis include bisphosphonates like zoledronate, antiresorptive agents such as denosumab, and antiangiogenic agents like axitinib., More recently, even arsenic trioxide, used in the treatment of leukemia, has been shown to cause osteonecrosis of the jaw 
- Osteonecrosis may be managed by either medical or surgical intervention, depending on the stage. Early stages (Stage 1 and 2) are managed with systemic antibiotics and analgesics along with oral antibacterial mouth rinses and debridement to remove any soft tissue irritation. Late stage osteonecrosis (Stage 3) is managed with surgical debridement and resection.
Therefore, we would like to emphasize the importance of a well-recorded medical and drug history of patients, as these can help in effectively identifying candidates who are at risk of developing osteonecrosis. Correct identification and prompt prophylactic measures taken for such patients can greatly reduce the complications.
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Conflicts of interest
There are no conflicts of interest.
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Kumar M, Vineetha R, Kudva A. Medication related osteonecrosis of jaw in a leukemia patient undergoing systemic arsenic trioxide therapy: A rare case report. Oral Oncol 2019 Dec;99:104343. doi: 10.1016/j.oraloncology.2019.06.024.