Faculty Bibliography Search Results
Medical Faculty Bibliography
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"Ultrasound imagery for dental implant diagnosis and treatment planning in a porcine model"
Choi, Mijin; Culjat, Martin O; Singh, Rahul S; White, Shane NJOURNAL OF PROSTHETIC DENTISTRY. 2012 Dec;108(6):344-353
MEDL:23217466 #202512
10.1016/S0022-3913(12)60190-5STATEMENT OF PROBLEM: Currently, there is no commercially available method to provide non-invasive, non-ionizing, real-time imaging of the gingival form and bony architecture of implant sites, before, during, and after implant placement. PURPOSE: The purpose of this study was to demonstrate the feasibility of 2-dimensional (2-D) ultrasound imaging of soft and hard tissues for implant diagnosis and treatment planning. MATERIAL AND METHODS: A sector scanning ultrasound system was applied. Five representative clinical features (implant in an edentulous ridge, single implant tooth replacement, implant dehiscence, tooth dehiscence, and mental foramina) were created or identified in each of the 5 porcine jaws, which were then covered with soft tissue and imaged in an acoustic water tank. RESULTS: All of the 5 model features, in all 5 jaws, were clearly visible with the ultrasound. Most objects were visible over a large range of positions and angles. Each of the features, as well as the soft tissue and bone surfaces, were recognized by specific acoustic signatures, with the same signature recurring for each object type among all 5 of the jaw specimens. All implants were highly reflective and clearly visualized. CONCLUSIONS: A 2-D sector scanning ultrasound system was demonstrated to be capable of imaging representative features for implant treatment planning in a porcine model; these included implants placed in edentulous ridges; implants placed for single tooth replacement; implants with simulated dehiscences; teeth with simulated dehiscences; and mental foramina. Specific acoustic signatures for these features were defined. Qualitative differences between ultrasound and other dental imaging techniques were described..
2.
"Use of forced eruption to enhance a pontic site in the anterior maxilla"
Comut, Alper; Acharya, Varun; Jahangiri, LeilaJOURNAL OF PROSTHETIC DENTISTRY. 2012 Nov;108(5):273-278
MEDL:23107234 #180882
10.1016/S0022-3913(12)00152-7Extraction of teeth leads to bone resorption that can result in asymmetrical hard and soft tissue topography. This article describes a technique to enhance a pontic site in the anterior maxilla by using forced eruption as an alternative to conventional hard and soft tissue augmentation surgeries. Forced eruption is a well-known procedure and its use in developing a pontic site for a fixed dental prosthesis is described in this clinical report..
3.
"Effect of metal primers on microtensile bond strength between zirconia and resin cements"
Dias de Souza, Grace M; Thompson, Van P; Braga, Roberto RJOURNAL OF PROSTHETIC DENTISTRY. 2011 May;105(5):296-303
MEDL:21530754 #155291
10.1016/S0022-3913(11)60055-3STATEMENT OF PROBLEM: There are no established clinical procedures for bonding zirconia to tooth structure using resin cements. PURPOSE: The purpose of this study was to evaluate the influence of metal primers, resin cements, and aging on bonding to zirconia. MATERIAL AND METHODS: Zirconia was treated with commercial primers developed for bonding to metal alloys (Metaltite, Metal Primer II, Alloy Primer or Totalbond). Non-primed specimens were considered as controls. One-hundred disk-shaped specimens (19 x 4 mm) were cemented to composite resin substrates using Panavia or RelyX Unicem (n=5). Microtensile bond strength specimens were tested after 48 hours and 5 months (150 days), and failure modes were classified as type 1 (between ceramic/cement), 2 (between composite resin/cement) or 3 (mixed). Data were analyzed by 3-way ANOVA and Multiple Comparison Tukey test (alpha=.05). RESULTS: The interactions primer/luting system (P=.016) and luting system/storage time (P=.004) were statistically significant. The use of Alloy Primer significantly improved the bond strength of RelyX Unicem (P<.001), while for Panavia, none of the primers increased the bond strength compared to the control group. At 48 hours, Panavia had statistically higher bond strength (P=.004) than Unicem (13.9 +/- 4.4MPa and 10.2 +/- 6.6MPa, respectively). However, both luting systems presented decreasing, statistically similar, values after aging (Panavia: 3.6 +/- 2.2MPa; Unicem: 6.1 +/- 5.3MPa). At 48 hours, Alloy Primer/Unicem had the lowest incidence of type 1 failure (8%). After aging, all the groups showed a predominance of type 1 failures. CONCLUSIONS: The use of Alloy Primer improved bond strength between RelyX Unicem and zirconia. Though the initial values obtained with Panavia were significantly higher than RelyX Unicem, after aging, both luting agents presented statistically similar performances.
4.
"Severe and rapid erosion of dental enamel from swimming: A clinical report"
Jahangiri, Leila; Pigliacelli, Steven; Kerr, A RossJOURNAL OF PROSTHETIC DENTISTRY. 2011 Oct;106(4):219-223
MEDL:21962583 #155399
10.1016/S0022-3913(11)60126-1The diagnosis and treatment of a patient with excessive and rapid erosion of enamel is presented. Although the Center for Disease Control and the dental literature have reported on dental enamel erosion resulting from swimming pool chlorination, the awareness of such etiology among dental professionals may be limited. Common findings in these reports include cold sensitivity, a distinctive appearance resembling laminate veneer preparations of the facial surfaces of anterior teeth, occurrence of diastemas, and at times, a rough or gritty texture of the remaining tooth structure. Clinical presentations of erosive lesions can be diagnosed and the best course of treatment determined.
5.
"A technique for retrieval of cement-retained implant-supported prostheses"
Schweitzer, Daniel M; Berg, Robert W; Mancia, Gregorio OJOURNAL OF PROSTHETIC DENTISTRY. 2011 Aug;106(2):134-138
MEDL:21821168 #155333
10.1016/S0022-3913(11)60110-8Predictable retrievability of cement-retained prostheses has been a clinical concern. This article presents a technique that describes an implant restoration design which will allow predictable removal of cement-retained implant-supported prostheses.
6.
"Single visit fabrication of a porcelain laminate veneer with CAD/CAM technology: A clinical report"
Vafiadis, Dean; Goldstein, GaryJOURNAL OF PROSTHETIC DENTISTRY. 2011 Aug;106(2):71-73
MEDL:21821159 #155332
10.1016/S0022-3913(11)00100-4Computer-assisted design and computer-assisted milling (CAD/CAM) technology has been shown to be an effective dental treatment adjunct. This article demonstrates its use in the fabrication of an in-office, one visit, porcelain laminate veneer.
7.
"ANALYSIS OF THREE-DIMENSIONAL DISTORTION OF TWO IMPRESSION MATERIALS IN THE TRANSFER OF DENTAL IMPLANTS"
Aguilar, ML; Elias, A; Vizcarrondo, CET; Psoter, WJJOURNAL OF PROSTHETIC DENTISTRY. 2010 ;103(4):202-209 APR
ISI:000276916100004 #155113
Statement of problem. In dental implant restorations, a lack of passivity may be associated with mechanical failure. Passivity can be compromised during impression making. Purpose. The purpose of this study was to compare the distortion of mechanically mixed polyether and hydrophilic addition silicone impression materials, and to evaluate the effect of intercoping distance on distortion. Material and methods. Twenty impressions (10 polyether and 10 silicone) were made from a single mandibular definitive cast with 5 abutment analogs using standardized laboratory and technique protocols. The direct impression technique and mechanical mixing were used. A precision measuring machine established spatial coordinates of the impression copings in 3 dimensions, with the operator blinded to materials. Linear distances (concentricity) and angular inclinations (perpendicularity, parallelism) were calculated to measure impression distortion relative to the positions/angulations of the implants in the definitive cast. Distortion differences between materials and implant intercoping distances were tested using 2-factor ANOVA with an interaction term. A Bonferroni 2-sided test was used (alpha=.05). Results. No significant difference was found between the impression materials for parallelism (P=.91) and concentricity (P=.85). For perpendicularity, the silicone material had an average of 0.643 degrees less distortion (P=.004). With respect to intercoping distances, no significant differences were found for perpendicularity (P=.234), parallelism (P=.114), or concentricity (P=.346). An interaction term for material and coping distance was not significant. Conclusions. Hydrophilic addition silicone and polyether impression materials have similar distortion effects for transfer procedures when using the direct impression technique and machine mixing. Silicone demonstrated superiority for perpendicularity distortion, though of a magnitude unlikely to have clinical significance. (J Prosthet Dent 2009;101:202-209).
8.
"A digital radiographic artifact: A clinical report"
Schweitzer, Daniel M; Berg, Robert WJOURNAL OF PROSTHETIC DENTISTRY. 2010 Jun;103(6):326-329
MEDL:20493320 #155121
10.1016/S0022-3913(10)00082-XDigital dental radiographic imaging is considered to be as diagnostically accurate as conventional film-based radiography. In addition, many digital radiographic systems offer various image enhancements that may aid in image interpretation. However, neither type of radiographic imaging technique perfectly correlates radiographic diagnoses with clinical findings. Moreover, visual digital enhancements may provide information that is diagnostically misleading. This report presents a completed patient treatment evaluation with both enhanced and unenhanced digital radiography. The outcome suggests that clinicians should be careful with the interpretation of digital radiographic images, as this can potentially result in false-positive diagnoses.
9.
"A technique to verify or correct analogue position and soft tissue profile on an implant working cast"
Vitale, Nicola Di; Tung, Francis; Goldstein, GaryJOURNAL OF PROSTHETIC DENTISTRY. 2009 Sep;102(3):137-140
MEDL:19703619 #154933
10.1016/S0022-3913(09)00098-5A procedure which allows verification of the implant working cast and a method to correct the position of one or more implant analogues, if necessary, is described. In a single procedure, a corrected, accurate cast with soft tissue profile can be obtained by using a polyether impression material in conjunction with an acrylic resin jig. (J Prosthet Dent 2009;102:137-139).
10.
"Ultrasound detection of submerged dental implants through soft tissue in a porcine model"
Culjat, Martin O; Choi, Mijin; Singh, Rahul S; Grundfest, Warren S; Brown, Elliott R; White, Shane NJOURNAL OF PROSTHETIC DENTISTRY. 2008 Mar;99(3):218-224
MEDL:18319093 #153408
10.1016/S0022-3913(08)60046-3GRANTS:DE 14189/DE/NIDCR NIH HHS/United States
STATEMENT OF PROBLEM: Current methods of measuring soft tissue thickness over potential dental implant sites and locating submerged implants may be imprecise or invasive. PURPOSE: The purpose of this study was to develop and demonstrate proof of the concept of a customized ultrasound imaging system in locating and measuring the depth of implants submerged beneath soft tissue. MATERIAL AND METHODS: A complete ultrasound system, including a customized soft tissue-matched transducer, transceiver, and digital signal processing algorithms, was created for the specific application of detecting dental implants anchored in bone beneath soft tissue. The system was used to locate implants placed in cancellous bone and measure overlying soft tissue depth in a porcine model. Ten measurements were made on each porcine model by manually moving the transducer laterally over the soft tissue surface. Data were analyzed with descriptive statistics. RESULTS: The mean signal-to-noise ratio, SNR (standard deviation), from the bone surfaces, was 19.1 (4.6) dB, and the mean SNR from the implant surfaces was 36.6 (2.2) dB, resulting in a mean difference of 17.5 dB, or x56.2, in average signal power between the bone and implant surfaces. Consequently, implants were easily and accurately (+/-0.2 mm) located beneath at least 5 mm of soft tissue. Likewise, soft tissue depths over bone and implants were accurately measured and were within the corresponding caliper tissue measurement error (+/-0.5 mm). CONCLUSIONS: The specialized ultrasound imaging system located and measured the depth of implants placed in bone submerged beneath soft tissue in a porcine model.
11.
"Complete-arch maxillary rehabilitation using a custom-designed and manufactured titanium framework: a clinical report"
Ehrenkranz, Howard; Langer, Burton; Marotta, LeonardJOURNAL OF PROSTHETIC DENTISTRY. 2008 Jan;99(1):8-13
MEDL:18182179 #154063
10.1016/S0022-3913(08)60001-3Fabrication of a passive framework when restoring multiple implants in an edentulous maxilla may be an important requisite for long-term implant survival. The development of computer-aided design and manufacturing techniques for fabricating custom 1-piece titanium frameworks can simplify that challenge. This article reports on a treatment in which a custom-milled titanium complete-arch maxillary framework was used to restore a compromised maxillary arch. A 4-year follow-up demonstrated a steady state of bone and no prosthodontic complications.
12.
"Fixed prosthesis with a milled bar for correcting misangled implants: a clinical report" [Case Report]
Lee, Jae-Hoon; Frias, Val; Woo, Changwoo; Maiberg, RomanJOURNAL OF PROSTHETIC DENTISTRY. 2007 Mar;97(3):129-132
MEDL:17394909 #163753
10.1016/j.prosdent.2007.01.003The fabrication of fixed implant-supported prostheses for edentulous maxillae may result in esthetic and functional problems due to the unfavorable angulations of the supporting implants. This article presents a technique that uses a metal mesosubstructure prepared with a conventional milling technique and palatal set screws to compensate for an unfavorable implant position, thereby providing a more esthetically acceptable and functional result..
13.
"Management of a patient with severe erosive lichen planus in need of an immediate complete denture: a clinical report"
Rabanal, Alejandro; Bral, Michael; Goldstein, GaryJOURNAL OF PROSTHETIC DENTISTRY. 2007 Oct;98(4):256-259
MEDL:17936124 #155390
10.1016/S0022-3913(07)60097-3This clinical report describes the treatment of a patient in need of an immediate complete denture who presented with severe erosive lichen planus. In conjunction with an immediate complete denture, tacrolimus (0.1%) ointment, an immunosuppressive agent, was applied topically over the lesions. There was a significant reduction in the size of the lesions at the second week of treatment, allowing the patient to tolerate the prosthesis without pain, thereby improving her quality of life.
14.
"Management of a patient with severe erosive lichen planus in need of an immediate complete denture: a clinical report"
Rabanal, Alejandro; Bral, Michael; Goldstein, GaryJOURNAL OF PROSTHETIC DENTISTRY. 2007 May;97(5):252-255
MEDL:17547941 #155391
10.1016/j.prosdent.2006.10.003This clinical report describes the treatment of a patient in need of an immediate complete denture who presented with severe erosive lichen planus. In conjunction with an immediate complete denture, tacrolimus (0.1%) ointment, an immunosuppressive agent, was applied topically over the lesions. There was a significant reduction in the size of the lesions at the second week of treatment, allowing the patient to tolerate the prosthesis without pain, thereby improving her quality of life.
15.
"Outcomes of root canal treatment and restoration, implant-supported single crowns, fixed partial dentures, and extraction without replacement: a systematic review"
Torabinejad, Mahmoud; Anderson, Patricia; Bader, Jim; Brown, L Jackson; Chen, Lie H; Goodacre, Charles J; Kattadiyil, Mathew T; Kutsenko, Diana; Lozada, Jaime; Patel, Rishi; Petersen, Floyd; Puterman, Israel; White, Shane NJOURNAL OF PROSTHETIC DENTISTRY. 2007 Oct;98(4):285-311
MEDL:17936128 #105298
10.1016/S0022-3913(07)60102-4STATEMENT OF PROBLEM: Dentists and patients are regularly confronted by a difficult treatment question: should a tooth be saved through root canal treatment and restoration (RCT), be extracted without any tooth replacement, be replaced with a fixed partial denture (FPD) or an implant-supported single crown (ISC)? PURPOSE: The purpose of this systematic review was to compare the outcomes, benefits, and harms of endodontic care and restoration compared to extraction and placement of ISCs, FPDs, or extraction without tooth replacement. MATERIAL AND METHODS: Searches performed in MEDLINE, Cochrane, and EMBASE databases were enriched by hand searches, citation mining, and expert recommendation. Evidence tables were developed following quality and inclusion criteria assessment. Pooled and weighted mean success and survival rates, with associated confidence intervals, were calculated for single implant crowns, fixed partial dentures, and initial nonsurgical root canal treatments. Data related to extraction without tooth replacement and psychosocial outcomes were evaluated by a narrative review due to literature limitations. RESULTS: The 143 selected studies varied considerably in design, success definition, assessment methods, operator type, and sample size. Direct comparison of treatment types was extremely rare. Limited psychosocial data revealed the traumatic effect of loss of visible teeth. Economic data were largely absent. Success rates for ISCs were higher than for RCTs and FPDs, respectively; however, success criteria differed greatly among treatment types, rendering direct comparison of success rates futile. Long-term survival rates for ISCs and RCTs were similar and superior to those for FPDs. CONCLUSIONS: Lack of comparative studies with similar outcomes criteria with comparable time intervals limited comparison of these treatments. ISC and RCT treatments resulted in superior long-term survival, compared to FPDs. Limited data suggested that extraction without replacement resulted in inferior psychosocial outcomes compared to alternatives. Long-term, prospective clinical trials with large sample sizes and clearly defined outcomes criteria are needed.
16.
"An evaluation of wear when enamel is opposed by various ceramic materials and gold"
Elmaria, Asmaa; Goldstein, Gary; Vijayaraghavan, Therizhandur; Legeros, Raquel Z; Hittelman, Eugene LJOURNAL OF PROSTHETIC DENTISTRY. 2006 Nov;96(5):345-353
MEDL:17098498 #156384
10.1016/j.prosdent.2006.09.002STATEMENT OF PROBLEM: Ceramic restorations have been known to cause wear of opposing enamel. PURPOSE: The purpose of this study was to evaluate enamel wear caused by 3 ceramic substrates in the glazed and polished conditions. MATERIAL AND METHODS: Sixty ceramic discs (10 x 2 mm)-20 each of Finesse, All-Ceram, and IPS-Empress-were prepared and glazed. Each group of 20 was divided into 2 groups of 10. The surfaces of one group were ground and polished using a porcelain polishing kit (Dialite). The remaining 10 were left as glazed. Ten specimens of a type III gold alloy were cast into rectangular shapes of 10 x 12 x 2 mm and polished. Seventy human cusps were prepared from sound, caries-free, extracted teeth and abraded against the substrates in a wear machine for a total of 10,000 cycles. The cusp height loss was traced before and after the wear test using a profile projector. Mean surface roughness (R(a)) values for the substrates were also recorded with a profilometer before testing. Differences in R(a) were evaluated using 1- and 2-way ANOVA and the Scheffe post hoc test (alpha = .05). RESULTS: One-way ANOVA indicated that enamel height loss was significantly different by material (P < .001) and surface condition (glazed and polished or glazed; P < .05). Gold, polished Finesse, and polished All-Ceram were the least abrasive, whereas glazed IPS-Empress was the most abrasive. There was no significant interaction effect between substrate type and surface condition. Significant differences were found when R(a) of the substrate condition was compared with enamel wear (P < .01). CONCLUSIONS: Gold, polished Finesse, and polished All-Ceram caused the least enamel wear, whereas IPS-Empress caused the most wear. Cast gold was significantly different than glazed IPS-Empress (P < .05), whereas other groups overlapped. There was significant correlation between R(a) and enamel wear (P < .01)..
17.
"A method of verifying and improving internal fit of all-ceramic restorations"
Jahangiri, Leila; Estafan, DeniseJOURNAL OF PROSTHETIC DENTISTRY. 2006 Jan;95(1):82-83
MEDL:16399281 #151967
10.1016/j.prosdent.2005.11.00118.
"A multidisciplinary approach for treating congenitally transposed canines: a clinical report"
Jahangiri, Leila; Luu, Long; Estafan, DeniseJOURNAL OF PROSTHETIC DENTISTRY. 2006 Jun;95(6):413-416
MEDL:16765152 #151979
10.1016/j.prosdent.2006.04.007A multidisciplinary approach is generally required in the treatment of patients who present with missing and malpositioned teeth to achieve an esthetic and functional outcome. Treatment of a patient with congenitally transposed canines, missing central incisors, and peg-shaped lateral incisors using a multidisciplinary approach is presented.
19.
"Recent advances in etched cast restorations"
Barrack, GeraldJOURNAL OF PROSTHETIC DENTISTRY. 2005 Jan;93(1):1-7
MEDL:15623989 #274922
10.1016/j.prosdent.2004.10.02520.
"In vivo correlation of noncarious cervical lesions and occlusal wear"
Estafan, Ashraf; Furnari, Peter C; Goldstein, Gary; Hittelman, Eugene LJOURNAL OF PROSTHETIC DENTISTRY. 2005 Mar;93(3):221-226
MEDL:15775922 #151953
10.1016/j.prosdent.2004.12.012STATEMENT OF PROBLEM: The etiology of noncarious cervical lesions is not well understood. An understanding of the etiology helps the clinician determine appropriate treatment and management strategies. Purpose This study evaluated the relationship between noncarious cervical lesions and occlusal (or incisal) wear. MATERIAL AND METHODS: Casts (n = 299) made from dental students were articulated in a semi-adjustable articulator and evaluated. Data included the presence and contour of noncarious cervical lesions (NCLs) and the presence, location, and severity of any occlusal/incisal wear facets. Also included were Angle's classification, occlusal guidance patterns, midline, presence of tori, tooth restoration, reverse articulation (crossbite), open occlusal relationship, and posterior excursive contacts where present. Following a calibration procedure, 2 evaluators made independent observations on the casts. The first evaluator recorded for each tooth in each subject: presence and severity of NCLs, presence and extent of occlusal/proximal restorations, and presence of reverse articulation and open occlusal relationship. Following the first evaluation red rope wax was placed at the cervical margins of each tooth for the purpose of blinding the second evaluator from NCL observations. The second evaluator recorded severity and location of occlusal/incisal wear, presence or absence of posterior excursive contacts, Angle's classification, occlusal guidance pattern, any midline discrepancy, and presence or absence of tori. The Spearman correlation coefficient and chi 2 tests were used to analyze the data (alpha=.05). RESULTS: There was no relationship between noncarious cervical lesions and occlusal/incisal wear. There was also no correlation between NCLs and other parameters examined. CONCLUSIONS: Under the conditions of this study, noncarious cervical lesions are not related to occlusal wear.
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