Osteoradionecrosis following radiation to reconstructed mandible with titanium plate and osseointegrated dental implants

Osteonecrosis of the jaw is associated with defects in vascularization and with the use of oral bisphosphonates. Osseous exposition and infection may occur. Recommended treatment is variable, from antibiotic medication, bony decortication to resections of the mandible in severe cases. Reconstruction of mandible, in cases of resections is essential for maintaining esthetic profile and adequate form and function. Objective: To report a case about the dangers of oral bisphosphonates in association with invasive procedures such as dental implants Case report: Female patient, 64 years-old, with osteonecrosis of the jaw caused by use of oral bisphosphonates after rehabilitation with dental implants. She had an edentulous and atrophic mandible and poor healthy. After diagnosis, partial resection of the jaw was performed together with the reconstruction with titanium plate, with no success. Then, iliac bone graft fixed by plates and screws was attempted, again with no success. Conclusion: Despite of the small number of cases of osteonecrosis associated with oral bisphosphonate reported in the literature, a simple implant surgery could result in adverse consequences if the use of this medication were overlooked in the anamnesis.

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Jaw osteonecrosis after dental implants associated with oral bisphosphonates – case report of resection of mandible

RSBO ◽

10.21726/rsbo.v1i2.410 ◽

2017 ◽

Vol 1 (2) ◽

pp. 98

Author(s):

Paola Fernanda Cotait de Lucas Corso ◽

Sara Regina Todero ◽

Aline Monise Sebastiani ◽

Leandro Eduardo Kluppel ◽

Nelson Luis Barbosa Rebellato ◽

...

Keyword(s):

Case Report ◽

Dental Implants ◽

Osteonecrosis Of The Jaw ◽

Oral Bisphosphonates ◽

Titanium Plate ◽

Form And Function ◽

Recommended Treatment ◽

Oral Bisphosphonate ◽

Iliac Bone Graft ◽

And Function

Osteonecrosis of the jaw is associated with defects in vascularization and with the use of oral bisphosphonates. Osseous exposition and infection may occur. Recommended treatment is variable, from antibiotic medication, bony decortication to resections of the mandible in severe cases. Reconstruction of mandible, in cases of resections is essential for maintaining esthetic profile and adequate form and function. Objective: To report a case about the dangers oforal bisphosphonates in association with invasive procedures such as dental implants Case report: Female patient, 64 years-old, with osteonecrosis of the jaw caused by use of oral bisphosphonates after rehabilitation with dental implants. She had an edentulous and atrophic mandible and poor healthy. After diagnosis, partial resection of the jaw was performed together with the reconstruction with titanium plate, with no success. Then, iliac bone graft fixed by plates and screws was attempted, again with no success. Conclusion: Despiteof the small number of cases of osteonecrosis associated with oral bisphosphonate reported in the literature, a simple implant surgery could result in adverse consequences if the use of this medication were overlooked in the anamnesis.

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Comparative Evaluation of Microroughness created on Titanium Alloy for use in Dental Implants subjected to Two Different Acid Etching Techniques: An in vitro Study

Journal of Contemporary Dentistry ◽

10.5005/jp-journals-10031-1134 ◽

2016 ◽

Vol 6 (1) ◽

pp. 1-8

Author(s):

Vishwas Madaan ◽

Ashvini M Padhye ◽

Manjeet Mapara

Keyword(s):

Titanium Alloy ◽

Dental Implants ◽

Comparative Evaluation ◽

In Vitro Study ◽

Vitro Study ◽

Acid Etching ◽

Titanium Plate ◽

Average Roughness ◽

Etching Technique

ABSTRACT Aim The aim of this study was to comparatively evaluate the microroughness created on titanium alloy for use in dental implants subjected to two different acid etching techniques. Materials and Methods Commercially available grade 5 pure titanium plates were machine prepared into 26 plates measuring 3 × 1 cm × 5 mm for acid etching with hydrofluoric acid (HF) and dual acid etching technique using sulfuric acid (H2SO4) followed by hydrochloric acid (HCl). Twenty-five plates were divided into four groups based on the duration and sequence of acid etching. Upon completion of the acid etching procedure, the titanium plates were assessed for their surface characteristics by a surface profilometer. The average roughness parameters values Ra, Rq, Rz obtained for each titanium plate were compared against each other and with unetched titanium plate. Results The average roughness value Ra obtained was 0.480 μm for untreated surface and 3.65 μm maximum for the titanium plate etched for 72 hours in H2SO4 and 48 hours in HCl, which is about seven times the value of surface roughness on the unetched plates. The roughness values obtained after acid etching with HF for any duration were nonsignificant compared with the unetched plates. Conclusion The dual acid etching technique seems to be a simple method to develop a titanium implant surface, though evaluation of the biological response to this surface is necessary. Clinical significance The present study showed that by optimizing the parameters of acid etching, a rough titanium surface can be obtained similar to the various implant surfaces available commercially. How to cite this article Madaan VU, Mapara M, Padhye AM. Comparative Evaluation of Microroughness created on Titanium Alloy for use in Dental Implants subjected to Two Different Acid Etching Techniques: An in vitro Study. J Contemp Dent 2016;6(1):1-8.

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