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Steinmassl O, Laimer J, Offermanns V, Wildauer M, Steinmassl PA, Grams AE, Kofler F, Rasse M, Bruckmoser E. Clinical Outcome Following Surgical Repair of Small Versus Large Orbital Floor Fractures Using Polyglactin 910/Polydioxanone (Ethisorb ®). Materials (Basel) 2020; 13:ma13010206. [PMID: 31947782 PMCID: PMC6982172 DOI: 10.3390/ma13010206] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/29/2019] [Accepted: 12/31/2019] [Indexed: 11/16/2022]
Abstract
The aim of this retrospective study was to evaluate the clinical outcome of surgical management of small versus large, isolated orbital floor fractures (OFFs) using polyglactin 910/polydioxanone (Ethisorb®). Covering a four-year period (2010-2013), all records concerning midfacial fractures with involvement of the orbit were screened. Isolated fractures of the orbital floor as well as combined injuries of the orbital floor and medial wall that had been treated surgically using polyglactin 910/polydioxanone (Ethisorb®) were included. Patients underwent a preoperative, a postoperative, and a late ophthalmologic assessment. The clinical outcomes of surgically managed small OFFs up to 2 cm2 were statistically analyzed and compared to clinical results in larger defects. The final sample included 61 patients (25 women, 36 men). Fractures up to 2 cm2 were found in 33 patients (54.1%), whereas 28 patients (45.9%) suffered from OFFs larger than 2 cm2. The clinical outcomes did not significantly differ between both sample categories, and statistical analysis showed a power of 0.91 to detect a potentially existing difference. On final examination, 52 patients were free of any clinical symptoms, whereas minor issues were found in seven subjects, and two patients suffered from severe impairment. In conclusion, polyglactin 910/polydioxanone (Ethisorb®) seems to be a suitable material for surgical repair of both small and large OFFs.
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Affiliation(s)
- Otto Steinmassl
- University Hospital for Cranio-Maxillofacial and Oral Surgery, A-6020 Innsbruck, Austria
| | - Johannes Laimer
- University Hospital for Cranio-Maxillofacial and Oral Surgery, A-6020 Innsbruck, Austria
- Correspondence: ; Tel.: +43-512-504-24271
| | - Vincent Offermanns
- University Hospital for Cranio-Maxillofacial and Oral Surgery, A-6020 Innsbruck, Austria
| | - Matthias Wildauer
- University Hospital for Radiology, Medical University of Innsbruck, A-6020 Innsbruck, Austria
| | | | - Astrid E. Grams
- University Hospital for Neuroradiology, A-6020 Innsbruck, Austria
| | - Ferdinand Kofler
- University Hospital for Cranio-Maxillofacial and Oral Surgery, A-6020 Innsbruck, Austria
| | - Michael Rasse
- University Hospital for Cranio-Maxillofacial and Oral Surgery, A-6020 Innsbruck, Austria
| | - Emanuel Bruckmoser
- Private Practice for Oral and Maxillofacial Surgery, A-5020 Salzburg, Austria
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Steiner R, Heiss-Kisielewsky I, Schwarz V, Schnabl D, Dumfahrt H, Laimer J, Steinmassl O, Steinmassl PA. Zirconia Primers Improve the Shear Bond Strength of Dental Zirconia. J Prosthodont 2019; 29:62-68. [PMID: 30624832 DOI: 10.1111/jopr.13013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/15/2018] [Indexed: 02/04/2023] Open
Abstract
PURPOSE Various resin cements and priming agents are available for adhesive luting of zirconia restorations. The purpose of this study was to investigate how cement type and priming protocol affect the shear bond strength on zirconia ceramics. MATERIALS AND METHODS Yttria-stabilized tetragonal zirconia polycrystalline ceramic cylinders were bonded to flat zirconia ceramic surfaces using 7 commercially available resin cements. Ten specimens of each cement group were pretreated with a universal primer, and 10 specimens per group were bonded without pretreatment. In addition, 10 specimens per group were pretreated with system-specific zirconia primers, which were available for 3 cements. Altogether, 170 bonded specimens were water-stored, thermal-cycled, and then submitted to shear bond strength tests. The shear bond strength and the fracture types were documented. Differences in shear bond strengths were assessed using 2-way ANOVA with post-hoc test (α = 0.05). A point-biserial correlation was run between the fracture patterns and the shear bond strengths. RESULTS The mean shear bond strengths of cements in the unprimed group showed large variations between 2.52 ± 3.01 (mean ± SD) MPa and 33.15 ± 7.35 MPa. Pretreating the specimens with a universal primer improved the shear bond strengths significantly in all groups (p < 0.05) with a range of 21.80 ± 12.51 to 57.20 ± 11.40 MPa. The system-specific primers also improved the shear bond strength significantly, compared to the unprimed group (p < 0.01); however, only one system-specific primer achieved a shear bond strength superior to the universal primer (p < 0.01). There was also a statistical correlation between the fracture type and the shear bond strength (p < 0.0005), with cohesively fractured specimens showing higher shear bond strengths (37.24 ± 19.87 MPa) than adhesively fractured specimens (23.10 ± 17.65 MPa) (p < 0.001). CONCLUSION Using universal primer can enhance the maximal shear bond strength of zirconia.
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Affiliation(s)
- René Steiner
- University Hospital for Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, Austria
| | - Irene Heiss-Kisielewsky
- University Hospital for Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, Austria
| | - Vincent Schwarz
- University Hospital for Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, Austria
| | - Dagmar Schnabl
- University Hospital for Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, Austria
| | - Herbert Dumfahrt
- University Hospital for Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, Austria
| | - Johannes Laimer
- University Hospital for Cranio-Maxillofacial and Oral Surgery, Medical University of Innsbruck, Austria
| | - Otto Steinmassl
- University Hospital for Cranio-Maxillofacial and Oral Surgery, Medical University of Innsbruck, Austria
| | - Patricia-Anca Steinmassl
- University Hospital for Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, Austria
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Steinmassl O, Steinmassl PA, Schwarz A, Crismani A. Dental age is more appropriate than chronological age for evaluating the mandibular movement range in children. J Craniomaxillofac Surg 2017; 45:1201-1204. [DOI: 10.1016/j.jcms.2017.05.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 04/24/2017] [Accepted: 05/10/2017] [Indexed: 10/19/2022] Open
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Wiedemair V, Mayr S, Wimmer DS, Köck EM, Penner S, Kerstan A, Steinmassl PA, Dumfahrt H, Huck CW. Novel Molecular Spectroscopic Multimethod Approach for Monitoring Water Absorption/Desorption Kinetics of CAD/CAM Poly(Methyl Methacrylate) Prosthodontics. Appl Spectrosc 2017; 71:1600-1612. [PMID: 27956591 DOI: 10.1177/0003702816682742] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Water absorbed to poly(methyl methacrylate) (PMMA)-based CAD/CAM (computer-assisted design/computer-assisted manufacturing) prosthodontics can alter their properties including hardness and stability. In the present contribution, water absorption and desorption kinetics under defined experimental conditions were monitored employing several supplementary and advanced Fourier transform infrared (FT-IR) spectroscopic techniques in combination with multivariate analysis (MVA). In this synergistic vibrational spectroscopic multimethod approach, first a novel near-infrared (NIR) diffuse fiber optic probe reflection spectroscopic method was established for time-resolved analysis of water uptake within seven days under controlled conditions. Near-infrared water absorbance spectra in a wavenumber range between 5288-5100 cm-1 (combination band) and 5424-5352 cm-1 (second overtone) were used establishing corresponding calibration and validation models to quantify the amount of water in the milligram range. Therefore, 14 well-defined samples exposed to prior optimized experimental conditions were taken into consideration. The average daily water uptake conducting reference analysis was calculated as 22 mg/day for one week. Additionally, in this study for the first time NIR two-dimensional correlation spectroscopy (2D-COS) was conducted to monitor and interpret the spectral dynamics of water absorption on the prosthodontics in a wavenumber range of 5100-5300 cm-1. For sensitive time-resolved recording of water desorption, a recently developed high-temperature, high-pressure FT-IR reaction cell with water-free ultra-dry in situ and operando operation was applied. The reaction cell, as well as the sample holder, was fully made of quartz glass, with no hot metal or ceramic parts in the vicinity of the high temperature zone. Applying a temperature gradient in the range of 25-150 ℃, mid-infrared (MIR) 2D-COS was successfully conducted to get insights into the dynamic behavior of O-H (1400-1800 cm-1) absorption bands with increasing temperature over time and the release of CO2 (2450 cm-1) from the polymers. In addition, an ATR FT-IR imaging setup was optimized in order to investigate the surface homogeneity of the PMMA-based resins with a spatial resolution to 2 µm. From this vibrational spectroscopic multimethod approach and the collection of several analytical data, conclusions were drawn as to which degree the surface structure and/or its porosity have an impact onto the amount of water absorption.
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Affiliation(s)
- Verena Wiedemair
- 1 Institute of Analytical Chemistry and Radiochemistry, CCB - Center for Chemistry and Biomedicine, Innsbruck, Austria
| | - Sophia Mayr
- 1 Institute of Analytical Chemistry and Radiochemistry, CCB - Center for Chemistry and Biomedicine, Innsbruck, Austria
| | - Daniel S Wimmer
- 1 Institute of Analytical Chemistry and Radiochemistry, CCB - Center for Chemistry and Biomedicine, Innsbruck, Austria
| | - Eva Maria Köck
- 2 Institute of Physical Chemistry, CCB - Center for Chemistry and Biomedicine, Innsbruck, Austria
| | - Simon Penner
- 2 Institute of Physical Chemistry, CCB - Center for Chemistry and Biomedicine, Innsbruck, Austria
| | | | - Patricia-Anca Steinmassl
- 4 University Hospital for Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, Innsbruck, Austria
| | - Herbert Dumfahrt
- 4 University Hospital for Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, Innsbruck, Austria
| | - Christian W Huck
- 1 Institute of Analytical Chemistry and Radiochemistry, CCB - Center for Chemistry and Biomedicine, Innsbruck, Austria
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Steinmassl PA, Klaunzer F, Steinmassl O, Dumfahrt H, Grunert I. Evaluation of Currently Available CAD/CAM Denture Systems. INT J PROSTHODONT 2017; 30:116-122. [DOI: 10.11607/ijp.5031] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Steinmassl O, Steinmassl PA, Schwarz A, Crismani A. Orthodontic Treatment Need of Austrian Schoolchildren in the Mixed Dentition Stage. Swiss Dent J 2017; 127:122-128. [PMID: 28266685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Malocclusal traits can impair dental health and aesthetical appearance. The index of orthodontic treatment need (IOTN) identifies the patients who benefit the most from orthodontic treatment. The aim of this study was to assess the malocclusion frequencies and the orthodontic treatment need among Austrian children in the mixed dentition stage, since there is no pre-existing data from Austria. In the present study, 157 children aged between 8 and 10 years were examined. Following an anamnesis questionnaire, which included a question about the parents' perceived treatment need, the children were examined clinically and dental impressions were taken. The sagittal molar relationship, overjet, overbite and the presence of cross- or scissor bite were registered. The treatment need was assessed using the dental health component (DHC) of the index of orthodontic treatment need (IOTN). 64.3% (95% CI [56.8, 71.8]) of the children showed Angle class I molar relation, 33.1% (95% CI [25.8, 40.5]) class II and 2.5% (95% CI [0.1, 5.0]) Angle class III relation. Crossbite was found in 36.3% (95% CI [28.8, 43.8]) of the participants. A treatment need for medical reasons (IOTN 4 or 5) was found in 30.6% (95% CI [23.4, 37.8]). There was no statistically significant relationship between objective treatment need and the parents' perception. The malocclusion frequencies and the treatment need assessed in the present study appeared to be comparable to those assessed in other countries. The data supports the opinion that orthodontic screening is important and necessary at this stage of dental development, also due to the discordance between objective and perceived treatment need.
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Affiliation(s)
- Otto Steinmassl
- Department of Dental and Oral Medicine and Cranio-Maxillofacial and Oral Surgery, Medical University of Innsbruck, Austria
| | - Patricia-Anca Steinmassl
- Department of Dental and Oral Medicine and Cranio-Maxillofacial and Oral Surgery, Medical University of Innsbruck, Austria
| | - Anna Schwarz
- Department of Dental and Oral Medicine and Cranio-Maxillofacial and Oral Surgery, Medical University of Innsbruck, Austria
| | - Adriano Crismani
- Department of Dental and Oral Medicine and Cranio-Maxillofacial and Oral Surgery, Medical University of Innsbruck, Austria
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Steinmassl PA, Wiedemair V, Huck C, Klaunzer F, Steinmassl O, Grunert I, Dumfahrt H. Do CAD/CAM dentures really release less monomer than conventional dentures? Clin Oral Investig 2016; 21:1697-1705. [PMID: 27704295 PMCID: PMC5442236 DOI: 10.1007/s00784-016-1961-6] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 09/14/2016] [Indexed: 11/29/2022]
Abstract
Objectives Computer-aided design (CAD)/computer-aided manufacturing (CAM) dentures are assumed to have more favourable material properties than conventionally fabricated dentures, among them a lower methacrylate monomer release. The aim of this study was to test this hypothesis. Materials and methods CAD/CAM dentures were generated from ten different master casts by using four different CAD/CAM systems. Conventional, heat-polymerised dentures served as control group. Denture weight and volume were measured; the density was calculated, and the denture surface area was assessed digitally. The monomer release after 7 days of water storage was measured by high-performance liquid chromatography. Results Whole You Nexteeth and Wieland Digital Dentures had significantly lower mean volume and weight than conventional dentures. Baltic Denture System and Whole You Nexteeth had a significantly increased density. Baltic Denture System had a significantly smaller surface area. None of the CAD/CAM dentures released significantly less monomer than the control group. Conclusions All tested dentures released very low amounts of methacrylate monomer, but not significantly less than conventional dentures. A statistically significant difference might nevertheless exist in comparison to other, less recommendable denture base materials, such as the frequently used autopolymerising resins. Clinical relevance CAD/CAM denture fabrication has numerous advantages. It enables the fabrication of dentures with lower resin volume and lower denture weight. Both could increase the patient comfort. Dentures with higher density might exhibit more favourable mechanical properties. The hypothesis that CAD/CAM dentures release less monomer than conventional dentures could, however, not be verified.
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Affiliation(s)
- Patricia-Anca Steinmassl
- University Hospital for Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, MZA, Anichstr. 35, A-6020, Innsbruck, Austria
| | - Verena Wiedemair
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, CCB, Innrain 80, A-6020, Innsbruck, Austria
| | - Christian Huck
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, CCB, Innrain 80, A-6020, Innsbruck, Austria
| | - Florian Klaunzer
- University Hospital for Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, MZA, Anichstr. 35, A-6020, Innsbruck, Austria
| | - Otto Steinmassl
- University Hospital for Cranio-Maxillofacial and Oral Surgery, Medical University of Innsbruck, MZA, Anichstr. 35, A-6020, Innsbruck, Austria.
| | - Ingrid Grunert
- University Hospital for Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, MZA, Anichstr. 35, A-6020, Innsbruck, Austria
| | - Herbert Dumfahrt
- University Hospital for Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, MZA, Anichstr. 35, A-6020, Innsbruck, Austria
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Steinmassl PA, Steinmassl O, Kraus G, Dumfahrt H, Grunert I. Is Cognitive Status Related to Oral Hygiene Level and Appropriate for Determining Need for Oral Hygiene Assistance? J Periodontol 2015; 87:41-7. [PMID: 26447750 DOI: 10.1902/jop.2015.150349] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND With declining general health, the maintenance of oral health becomes increasingly difficult. Unfortunately, health care resources are limited. An assessment tool for detecting a patient's need for oral health care assistance would promote its adequate distribution. The aim of this study is to evaluate if the Shulman clock-drawing test score is a suitable assessment tool for determining the need for oral hygiene assistance. METHODS Data collected from recent dental checkups of 126 inhabitants of five Austrian residential care facilities were analyzed. The Shulman clock-drawing test score was used as a measure for cognitive abilities and related to tooth and denture hygiene indices, which were assessed using the approximal space plaque index (API) and the denture plaque index (DPI). RESULTS Shulman score values were distributed almost evenly in the study population. The mean API was 83.6% (SD 20.2%) for the maxilla and 94.9% (SD 15.6%) for the mandible. The mean DPI was 43.9% (SD 31.4%). Cognitive impairment was not statistically related to the dental or denture hygiene index. CONCLUSIONS A high Shulman clock-drawing test score indicates the need for oral hygiene assistance, but it is not suitable as a single tool to assess this need. Patients with other disabilities might equally qualify for assistance. Dentures, however, can be cleaned quickly and efficiently independently of patient compliance; therefore, cleaning the patients' dentures should be part of nursing personnel's daily care routine for every patient.
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Affiliation(s)
- Patricia-Anca Steinmassl
- Department of Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, Innsbruck, Austria
| | - Otto Steinmassl
- Department of Cranio-Maxillofacial and Oral Surgery, Medical University of Innsbruck
| | | | - Herbert Dumfahrt
- Department of Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, Innsbruck, Austria
| | - Ingrid Grunert
- Department of Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, Innsbruck, Austria
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