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Mirmortazavi A, Madani AS, Hassanzadeh S, Shakiba R. Mallampati score in patients with temporomandibular joint disorders: A pilot case-control study. Clin Exp Dent Res 2024; 10:e866. [PMID: 38433302 PMCID: PMC10909797 DOI: 10.1002/cre2.866] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 01/13/2024] [Accepted: 01/22/2024] [Indexed: 03/05/2024] Open
Abstract
OBJECTIVES Temporomandibular joint disorder (TMD) is defined as any functional abnormalities in different parts of the face and neck. The Mallampati index is an indicator for determining the extent of airway blockage. No study has examined the relationship between TMD and Mallampati score. Most studies have investigated the relationship between temporomandibular joint problems and sleep problems. This pilot study aimed to assess the Mallampati index scores among TMD patients. MATERIAL AND METHODS Eighty-four people were divided into the case (based on RDC/TMD) and control groups. Demographic information, neck circumference, tongue size, Mallampati score, and other variables were asked of people. STOP-BANG and Pittsburgh Sleep Quality Index (PSQI) were also completed for each patient. Data were analyzed with Chi-square, Fisher's exact, and Mann-Whitney tests. RESULTS The Mallampati and PSQI questionnaire scores in the case group were significantly higher than those in the control group (p < 0.001). The results showed that larger tongue and neck circumference patients had a higher Mallampati score. Pearson correlation coefficient showed that the Mallampati score had a direct and significant relationship with body mass index and PSQI (p < 0.001). CONCLUSIONS The results of this study show that Mallampati scores were significantly higher among patients with TMD than among healthy individuals.
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Affiliation(s)
- Amirtaher Mirmortazavi
- Department of Prosthodontics, School of DentistryMashhad University of Medical SciencesMashhadIran
| | - Azam Sadat Madani
- Department of Prosthodontics, School of DentistryMashhad University of Medical SciencesMashhadIran
| | - Saeed Hassanzadeh
- Faculty of DentistryMashhad University of Medical SciencesMashhadIran
| | - Reza Shakiba
- Faculty of DentistryMashhad University of Medical SciencesMashhadIran
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Rostami R, Kazemi R, Jabbari A, Madani AS, Rostami H, Taherpour MA, Molavi P, Jaafari N, Kuo MF, Vicario CM, Nitsche MA, Salehinejad MA. Efficacy and clinical predictors of response to rTMS treatment in pharmacoresistant obsessive-compulsive disorder (OCD): a retrospective study. BMC Psychiatry 2020; 20:372. [PMID: 32677923 PMCID: PMC7364645 DOI: 10.1186/s12888-020-02769-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 06/29/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Application of repetitive transcranial magnetic stimulation (rTMS) for treating obsessive-compulsive disorder (OCD) has been promising and approved by the Food and Drug Administration in 2018, but effects differ between patients. Knowledge about clinical predictors of rTMS response may help to increase clinical efficacy but is not available so far. METHODS In a retrospective study, we investigated the efficacy of rTMS over the dorsolateral prefrontal cortex (DLPFC) or supplementary motor area (SMA) in 65 pharmaco-resistant OCD outpatients recruited for rTMS treatment from July 2015 to May 2017. Patients received either SMA rTMS (n = 38) or bilateral DLPFC rTMS (n = 27) in case of reporting higher affective and depressive symptoms in addition to the primary OCD symptoms. OCD symptoms and depression/anxiety states were measured at baseline (before the 1st session) and after the 20th session of rTMS. Additionally, we performed a binary logistic regression analysis on the demographic and clinical variables based on the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) 3-factor and 2-factor models and individual items to investigate potential predictors of rTMS response. RESULTS Patients' scores in Y-BOCS and Beck anxiety/depression inventories were significantly decreased following rTMS treatment. 46.2% of all patients responded to rTMS, based on the criterion of at least a 30% reduction in Y-BOCS scores. There was no significant difference between response rates of patients in DLPFC and SMA groups. No significant demographic predictors of rTMS efficacy were identified. The factors "obsession severity", "resistance" and "disturbance" and the "interference due to obsessions" and "resistance against compulsions" items of the Y-BOCS significantly predicted response to rTMS. CONCLUSIONS In patients with less intrusive/interfering thoughts, and low scores in the "obsession severity", "disturbance", and "resistance" factors, rTMS might have superior effects. Identifying clinical and non-clinical predictors of response is relevant to personalize and adapt rTMS protocols in pharmaco-resistant OCD patients. Interpretation of rTMS efficacy should be done with caution due to the lack of a sham intervention condition.
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Affiliation(s)
- Reza Rostami
- Department of Psychology, University of Tehran, Tehran, Iran.
- Atieh Clinical Neuroscience Centre, Tehran, Iran.
| | - Reza Kazemi
- Department of Psychology, University of Tehran, Tehran, Iran
- Atieh Clinical Neuroscience Centre, Tehran, Iran
| | - Arezoo Jabbari
- Department of Psychology, University of Tehran, Tehran, Iran
- Atieh Clinical Neuroscience Centre, Tehran, Iran
| | - Azam Sadat Madani
- Atieh Clinical Neuroscience Centre, Tehran, Iran
- Department of Psychology, University of Shahed, Tehran, Iran
| | | | | | - Parviz Molavi
- Department of Psychiatry, Fatemi Hospital, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Nematollah Jaafari
- Unité de Recherche Clinique Intersectorielle en Psychiatrie Pierre Deniker, Centre Hospitalier Henri Laborit, 86021, Poitiers, France
- Univ. Poitiers & CHU Poitiers, INSERM U1084, Laboratoire Expérimental et Clinique en Neurosciences, 86021, Poitiers, France
| | - Min-Fang Kuo
- Department of Psychology and Neurosciences, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
| | - Carmelo M Vicario
- University of Messina, Department of Cognitive Science, Messina, Italy
| | - Michael A Nitsche
- Department of Psychology and Neurosciences, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany.
- Department of Neurology, University Medical Hospital Bergmannsheil, Bochum, Germany.
| | - Mohammad Ali Salehinejad
- Department of Psychology and Neurosciences, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
- Ruhr-University Bochum, International Graduate School of Neuroscience, Bochum, Germany
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Mohammadzadeh Z, Parisay I, Mehrabkhani M, Madani AS, Mazhari F. Clinical evaluation of fiber-reinforced composite crowns in pulp-treated primary molars: 12-month results. Eur J Dent 2017; 10:522-528. [PMID: 28042269 PMCID: PMC5166310 DOI: 10.4103/1305-7456.195177] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objective: The aim of this study was to evaluate the clinical performance of tooth-colored fiber-reinforced composite (FRC) crowns in pulp-treated second primary mandibular teeth. Materials and Methods: This split-mouth randomized, clinical trial performed on 67 children between 3 and 6 years with two primary mandibular second molars requiring pulp treatment. After pulp therapy, the teeth were randomly assigned to stainless steel crown (SSC) or FRC crown groups. Modified United States Public Health Service criteria were used to evaluate marginal integrity, marginal discoloration, and secondary caries in FRC crowns at intervals of 3, 6, and 12 months. Retention rate and gingival health were also compared between the two groups. The data were analyzed using Friedman, Cochran, and McNemar's tests at a significance level of 0.05. Results: Intact marginal integrity in FRC crowns at 3, 6, and 12 months were 93.2%, 94.8%, and 94.2%, respectively. Marginal discoloration and secondary caries were not found at any of the FRC crowns. The retention rates of the FRC crowns were 100%, 98.3%, and 89.7% at 3, 6 and 12 months, respectively, whereas all the SSCs were found to be present and intact after 12 months (P = 0.016). There was no statistically significant difference between the two groups in gingival health. Conclusion: According to the results of this study, it seems that when esthetics is a concern, in cooperative patients with good oral hygiene, FRC crowns can be considered as a valuable procedure.
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Affiliation(s)
- Zahra Mohammadzadeh
- Dental Research Center, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Iman Parisay
- Dental Material Research Center, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Mehrabkhani
- Oral and Maxillofacial Diseases Research Center, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Azam Sadat Madani
- Dental Research Center, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Mazhari
- Dental Material Research Center, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
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Imanimoghaddam M, Madani AS, Mahdavi P, Bagherpour A, Darijani M, Ebrahimnejad H. Evaluation of condylar positions in patients with temporomandibular disorders: A cone-beam computed tomographic study. Imaging Sci Dent 2016; 46:127-31. [PMID: 27358820 PMCID: PMC4925649 DOI: 10.5624/isd.2016.46.2.127] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 02/15/2016] [Revised: 03/31/2016] [Accepted: 04/05/2016] [Indexed: 11/23/2022] Open
Abstract
Purpose This study was performed to compare the condylar position in patients with temporomandibular joint disorders (TMDs) and a normal group by using cone-beam computed tomography (CBCT). Materials and Methods In the TMD group, 25 patients (5 men and 20 women) were randomly selected among the ones suffering from TMD according to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD). The control group consisted of 25 patients (8 men and 17 women) with normal temporomandibular joints (TMJs) who were referred to the radiology department in order to undergo CBCT scanning for implant treatment in the posterior maxilla. Linear measurements from the superior, anterior, and posterior joint spaces between the condyle and glenoid fossa were made through defined landmarks in the sagittal view. The inclination of articular eminence was also determined. Results The mean anterior joint space was 2.3 mm in the normal group and 2.8 mm in the TMD group, respectively. The results showed that there was a significant correlation between the superior and posterior joint spaces in both the normal and TMD groups, but it was only in the TMD group that the correlation coefficient among the dimensions of anterior and superior spaces was significant. There was a significant correlation between the inclination of articular eminence and the size of the superior and posterior spaces in the normal group. Conclusion The average dimension of the anterior joint space was different between the two groups. CBCT could be considered a useful diagnostic imaging modality for TMD patients.
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Affiliation(s)
- Mahrokh Imanimoghaddam
- Department of Oral and Maxillofacial Radiology, Oral and Maxillofacial Diseases Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Azam Sadat Madani
- Department of Prosthodontics, Faculty of Dentistry and Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Pirooze Mahdavi
- Department of Oral and Maxillofacial Radiology, Oral and Maxillofacial Diseases Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali Bagherpour
- Department of Oral and Maxillofacial Radiology, Oral and Maxillofacial Diseases Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mansoreh Darijani
- Department of Oral and Maxillofacial Radiology, Oral and Maxillofacial Diseases Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamed Ebrahimnejad
- Department of Oral and Maxillofacial Radiology, Oral and Maxillofacial Diseases Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
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Abstract
BACKGROUND With the introduction of skeletal anchorage system, recently it is possible to successfully intrude molar teeth. On the other hand, there have been concerns about periodontal changes associated with intrusion and there are few studies on this topic, especially for posterior teeth. MATERIALS AND METHODS Ten female patients were enrolled in this study. Maxillary molar intrusion was achieved by inserting two miniscrews and a 17 × 25 titanium molybdenum alloy spring. Crestal height changes were evaluated at three intervals including: Baseline (T0), end of active treatment (T1) and 6 months after retention (T2). Other variables including probing depth, gingival recession, attachment level and bleeding on probing were evaluated by clinical measurements in the three above mentioned intervals. One-sample Kolmogrov-Smirnov test ascertained the normality of the data. For all patients, the changes in tooth position and crestal height were evaluated using one-sample t-test. (P < 0.05). RESULTS Supra-erupted molars were successfully intruded a mean of 2.1 ± 0.9 mm during active treatment (T0-T1). A mean bone resorption of 0.9 ± 0.9 mm in mesial crest and 1 ± 0.8 mm in distal crest had occurred in total treatment (T0-T2). A mean of 0.6 ± 1.4 mm bone was deposited on mesial crest during the retention period (T1-T2) following tooth relapse. On average, 0.8 ± 0.4 mm attachment gain was obtained. Gingival margin coronalized a mean of 0.8 ± 0.6 mm throughout the entire treatment. Probing depth showed no significant change during treatment. CONCLUSION Within the limitations of this study, these results suggest that not only periodontal status was not negatively affected by intrusion, but also there were signs of periodontal improvement including attachment gain and shortening of clinical crown height.
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Affiliation(s)
- Shahin Bayani
- Department of Orthodontics, Kerman Oral and Dental Diseases Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Farzin Heravi
- Department of Orthodontics, Mashad Dental School and Dental Research Center, Mashad University of Medical Sciences, Mashad, Iran
| | - Mehrdad Radvar
- Department of Periodontics, Mashad Dental School and Dental Research Center, Mashad University of Medical Sciences, Mashad, Iran
| | - Najmeh Anbiaee
- Department of Maxillofacial Radiology, Mashad Dental School and Dental Research Center, Mashad University of Medical Sciences, Mashad, Iran
| | - Azam Sadat Madani
- Department of Prosthodontics, Mashad Dental School and Dental Research Center, Mashad University of Medical Sciences, Mashad, Iran
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Imanimoghaddam M, Madani AS, Hashemi EM. The evaluation of lateral pterygoid muscle pathologic changes and insertion patterns in temporomandibular joints with or without disc displacement using magnetic resonance imaging. Int J Oral Maxillofac Surg 2013; 42:1116-20. [PMID: 23746672 DOI: 10.1016/j.ijom.2013.01.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 11/30/2012] [Accepted: 01/14/2013] [Indexed: 01/27/2023]
Abstract
Temporomandibular joint (TMJ) disc displacement is a common disorder in patients with internal derangement. Certain anatomic features of TMJ may make the patient prone to this condition, namely lateral pterygoid muscle (LPM) insertion variations. The aim of this study was to investigate LPM attachments and their relationships with disc displacement and subsequent pathologic changes. A total of 26 patients with clinical temporomandibular disorders (TMDs) and a control group of 14 unaffected individuals were studied. Magnetic resonance images (MRIs) were taken to evaluate LPM insertion patterns, superior LPM head pathologic changes, and relative disc to condyle position. Data registration and analysis were done using SPSS v. 16.0. The most common variation (type I) was shown to be the superior head with two bundles, one attached to the disc and another to the condyle. No significant relationship between LPM insertion type and disc displacement or pathologic changes of the muscle was found. However, a link between disc displacement and muscle pathologic changes was established (P=0.001).
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Affiliation(s)
- M Imanimoghaddam
- Oral and Maxillofacial Radiology Department, School of Dentistry and Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Madani AS, Shamsian AA, Hedayati-Moghaddam MR, Fathi-Moghadam F, Sabooni MR, Mirmortazavi A, Golmohamadi M. A cross-sectional study of the relationship between serum sexual hormone levels and internal derangement of temporomandibular joint. J Oral Rehabil 2013; 40:569-73. [PMID: 23710731 DOI: 10.1111/joor.12074] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [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: 05/09/2013] [Indexed: 11/27/2022]
Abstract
Temporomandibular disorders (TMD) are defined as clinical conditions that involve the masticatory muscles, temporomandibular joint (TMJ) or both. The aim of this study was to evaluate serum 17β-oestradiol and progesterone levels in menstruating women affected by internal derangement of the TMJ. A total of 142 women (mean age 30·2 ± 6·7) who referred to medical diagnostic laboratory of Iranian Academic Centre for Education, Culture and Research (ACECR), Mashhad Branch, were enrolled during 2007 and 2008. Forty-seven individuals had disc displacement with reduction (Group IIa) according to Research Diagnostic Criteria (RDC)/TMD Axis I diagnosis. Radioimmunoassay was used for the detection of serum 17β-oestradiol and progesterone levels in all 142 subjects. The mean progesterone level was significantly higher in control group (11·6 ± 10·4 ng mL(-1) ) compared to women with TMD (8·4 ± 6·8 ng mL(-1) , P = 0·03). No significant difference was found in two groups regarding 17β-oestradiol level. Lower progesterone level in women with TMD can suggest the more important role of this hormone in the development of the disorder.
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Affiliation(s)
- A S Madani
- Oral & Maxillofacial Diseases Research Center, Department of Prosthodontics, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
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Imanimoghaddam M, Heravi F, Madani AS, Mohammadi A, Maruzi P. Evaluation of the relationship between vertical facial height and the morphology of the temporomandibular joint in skeletal class 3 patients. J Calif Dent Assoc 2012; 40:871-876. [PMID: 23270131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Class 3 patients may have relatively high prevalences of temporomandibular disorders; therefore, joint morphology can be important for their orthodontic-surgical treatments. The aim of this study was to evaluate the relationship between facial height and TMJ morphology in skeletal class 3 patients.
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Affiliation(s)
- Mahrokh Imanimoghaddam
- Dental Research Center of Mashhad University of Medical Sciences, Department of Oral and Maxillofacial Radiology School of Dentistry, Mashhad, Iran
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Madani AS, Abdollahian E, Khiavi HA, Radvar M, Foroughipour M, Asadpour H, Hasanzadeh N. The efficacy of gabapentin versus stabilization splint in management of sleep bruxism. J Prosthodont 2012; 22:126-31. [PMID: 22946979 DOI: 10.1111/j.1532-849x.2012.00914.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
PURPOSE This study aimed to determine if the use of gabapentin is more efficacious than a stabilization splint with regard to the intensity of masseter muscle contractions and/or sleep quality for patients experiencing sleep bruxism (SB). MATERIALS AND METHODS Twenty patients with SB participated in this clinical study. They were randomly divided into two treatment groups: stabilization splint group (n = 10) and gabapentin group (n = 10). The first polysomnographic examination was performed before the beginning of the experiment for all the participants. At the end of a 2-month period of stabilization splint therapy or gabapentin usage, a second polysomnographic recording was made. RESULTS Statistically significant reductions in the number of SB episodes per hour and per night, bruxism time index, total duration of SB episodes per night and number of SB episodes in stages NR I and NR II (p < 0.05) were observed in both groups after treatment. Both treatments significantly reduced the mean intensity of masseter muscle contractions during SB episodes. Moreover, the participants treated with gabapentin showed a significant improvement in total sleep time, slow wave sleep (stage III), and sleep efficiency (p < 0.05). CONCLUSIONS Gabapentin could be an effective treatment modality in SBs, especially in those with poor sleep quality.
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Affiliation(s)
- Azam Sadat Madani
- Dental Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
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Ahrari F, Madani AS, Ghafoori Z. A randomized clinical trial of the effect of low level laser therapy in myofacial pain syndrome. Med Oral Patol Oral Cir Bucal 2012. [DOI: 10.4317/medoral.17643551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Madani AS, Moeintaghavi A, Rezaeei M. Occlusal rehabilitation in a partially edentulous patient with lost vertical dimension using dental implants: a clinical report. J Contemp Dent Pract 2010; 11:E058-E64. [PMID: 21203738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM This clinical report describes the occlusal rehabilitation of a partially edentulous patient with lost vertical dimension. BACKGROUND The patient did not want a removable partial denture. Implants, fixed restorations with occlusal plane correction, were used to restore the anterior and posterior support and treat the severely worn dentition. However, a partially edentulous patient may be unable to recover normal function, esthetics, comfort, or phonetics with a conventional removable dental prosthesis. The use of dental implants-supported fixed prosthesis offers a multitude of benefits over a tooth-soft tissue supported removable partial denture prosthesis. SUMMARY This clinical report describes an organized approach to an occlusal reconstruction of a severely worn dentition, partially edentulous patient with fixed restorations, implants, occlusal plane correction, and recovery of the vertical dimension. The treatment offered the patient improved esthetics and the restoration of oral function. CLINICAL SIGNIFICANCE The main indications for implant-supported restorations in a partially edentulous patient are the elimination of the free-end distal extension and the benefit from fixed restorations. Success with implant-supported prosthodontics needs the same or more attention to detail and careful treatment planning for conventional fixed prosthodontics; a team approach is recommended.
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MESH Headings
- Dental Abutments
- Dental Implantation, Endosseous
- Dental Implants
- Dental Prosthesis, Implant-Supported
- Denture Design
- Denture, Partial, Fixed
- Esthetics, Dental
- Follow-Up Studies
- Humans
- Jaw, Edentulous, Partially/rehabilitation
- Jaw, Edentulous, Partially/surgery
- Male
- Malocclusion, Angle Class II/therapy
- Middle Aged
- Tooth Wear/therapy
- Treatment Outcome
- Vertical Dimension
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Affiliation(s)
- Azam Sadat Madani
- Department of Prosthodontics at the Mashhad Dental School and Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Ghahramanloo A, Madani AS, Sohrabi K, Sabzevari S. An evaluation of color stability of reinforced composite resin compared with dental porcelain in commonly consumed beverages. J Calif Dent Assoc 2008; 36:673-680. [PMID: 18856169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The effect of tea, cola, orange juice, and distilled water on the color stability of a porcelain (VITA VMK 95) and a reinforced composite rein (GC Gradia) was evaluated. Standardized specimens for each material was prepared. Specimens from each group were immersed in staining solutions at 50 degree Celsius for 30 days. Tea caused the most significant color change. DeltaE of all of the materials was changed after the immersion in all of the staining solutions during the experimental process.
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Affiliation(s)
- Ahmad Ghahramanloo
- Department of Prosthodontics, Dental Research Center and Dental School of Mashhad, Mashhad University of Medical Sciences, Mashhad, Iran.
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