The Use of a Custom-Made Ethylene Vinyl Acetate Interim Obturator for Sub-Total and Total Maxillectomies. A Report of 4 Cases

Johnson, Jeanette; Bishop, Ryan; Maida, Blake; Carrier, Marc; Young, Stuart W.; Shum, Jonathan; Hanna, Ivan T.; Wong, Miu-Ling; Melville, James C.

doi:10.1016/j.joms.2016.06.147

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nakamori et al 13 created a temporary obturator with a 3 mm thick underlying layer and a 1.5-2 mm thick covering layer of ethylene vinyl acetate sheet (EVA) adapted to cast using positive and negative pressure methods, respectively. Johnson et al 14 show the utilization of a custom-made EVA interim obturator for subtotal and total maxillectomies. When compared to the immediate acrylic surgical obturator, he found that all three patients agreed that the interim EVA obturator provided a greater function for speaking and eating.…”

Section: Casementioning

confidence: 99%

Hollowing of Delayed Surgical Obturator in Maxillectomy Defects Secondary to Mucormycosis in Post-COVID-19 Era: A Case Series

Gupta¹,

Chaturvedi²,

Deepika³

et al. 2023

International Journal of Prosthodontics and Restorative Dentistry

View full text Add to dashboard Cite

fabrication of definitive prosthesis. Delayed surgical obturator is also a critical part of the rehabilitation of patients during an early postoperative period as it improves the contour of the palate aiding in speech and swallowing. Therefore, in this case series, different methods of hollowing of delayed surgical obturator were tried in patients with extensive maxillary defects secondary to mucormycosis. Case DesCription Case 1A 57-year-old male was referred to the Department of Prosthodontics from the ENT Department for fabrication of a delayed surgical obturator for an acquired defect of the maxilla after surgical BaCkgrounDMucormycosis, a rare fungal infection associated with diabetes, had become much more common as a result of the lethal cocktail of COVID-19 infection and the widespread use of corticosteroids in India. It is caused by the Mucorales fungi, which have an affinity for blood vessel walls. They grow quickly once they acquire access to the mucous membranes, invading surrounding blood vessels and causing vascular thrombosis and necrosis. 1 The management includes surgical debridement of necrotic tissue with antifungal medication (amphotericin B, posaconazole, and isavuconazole; most common). 2 Extensive maxillary defects may occur after surgical excision and debridement of the affected areas due to the invasive nature of mucor. Rehabilitation of such defects is extremely challenging. At the expense of its shape, size, and weight, the obturator is stretched vertically to engage the surgical defect and horizontally to contact the bony or soft tissue undercuts in larger surgical defects. 3 Increased weight of the obturator can make it nonretentive due to gravity and endanger its function. As a result, hollow bulb obturators are made to reduce the prosthesis' weight.Based on Aramany's classif ication, Wu and Schaaf 4 constructed different types of obturator prostheses (both solid and hollow) and assessed them for weight reduction. They found that hollow obturator prostheses reduced weight by a significant amount, ranging from 6.55 to 33.06% depending on the size of the defect. To make open and closed hollow obturator prostheses lightweight, a variety of approaches have been described 5-10 and most of these methods have their limitations, such as multiple processing techniques. In literature, these processes of hollowing of obturator were mostly done for

show abstract

Section: Casementioning

confidence: 99%