Browsing of Articles

1. Alajbeg I [Iva], Valentić-Peruzović M, Alajbeg I [Ivan], Illeš D, Knezović-Zlatarić D, Katunarić M. Electromiographic Evaluation of Masticatory Muscle Activity in Patients with Temporomandibular Dysfunction. Acta Stomatol Croat. 2003;37(2):131-45.
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   Title in English:	Electromiographic Evaluation of Masticatory Muscle Activity in Patients with Temporomandibular Dysfunction
   Title in Croatian:	Elektromiografsko ispitivanje aktivnosti žvačnih mišića u ispitanika s temporomandibularnom disfunkcijom
   Type of Article:	preliminary report
   MeSH:	ELECTROMYOGRAPHY TEMPOROMANDIBULAR JOINT DISORDERS + diagnosis MASTICATORY MUSCLES + physiology
   Abstract:	The term temporomandibular dysfunction (TMD) encompasses a group of disorders of the masticatory muscles and temporomandibular joints. Major precipitating factors are occlusal, traumatic, psychosocial and systemic factors. The aim of this investigation was to determine possible altered muscular function in patients with TMD, as well as to determine the need for EMG application in TMD diagnosis. Forty young adults participated in this study: 13 subjects with signs and symptoms of TMD and 27 asymptomatic subjects, sex and age matched. Surface EMG recordings were obtained from left and right anterior temporal muscle, left and right masseter muscle and from left and right digastric muscle in eight mandibular positions. Right side to left side ratio of examined muscles myoelectrical signals in lateral occlusal and maximal lateral positions for the asymptomatic group showed significantly higher activity of the working side anterior temporal muscle (p<0.05). In the group of patients with TMD, regarding the same muscle, statistically significant differences were found only in the left occlusal and left maximal lateral position (p<0.05), at which greater activity was found for the working side temporal muscle. In the same positions of the right side no significant differences in anterior temporal muscle activity were found (p>0.05). Comparison of myoelectrical signals in the position of maximal intercuspation of teeth between the patients and the controls, showed significantly higher activity in right and left masseter muscle at 50% MVC (p<0.05) in the symptomatic group.Results of this investigation showed the presence of altered masticatory muscle activity in TMD patients and confirmed the use of electromyography in TMD diagnosis.

2. Glavina D, Škrinjarić I, Majstorović M. Marginal Adaptation of Cerec Ceramic Veneers after Cementing with Different Materials. Acta Stomatol Croat. 2003;37(2):147-58.
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   Title in English:	Marginal Adaptation of Cerec Ceramic Veneers after Cementing with Different Materials
   Title in Croatian:	Rubna prilagodba Cerec keramičkih faseta nakon cementiranja različitim materijalima
   Type of Article:	original scientific paper
   MeSH:	MARGINAL ADAPTATION (DENTISTRY) DENTAL VENEERS CEMENTATION DENTAL CEMENTS
   Abstract:	The aim of this study was to analyze the quality of marginal adaptation and gap width of Cerec ceramic veneers after cementation with two different materials (Tetric and Compolute). The study was carried out on 24 teeth, divided into groups of 12 on which ceramic veneers were fabricated. The first 12 veneers were cemented with a composite material with microparticles (Tetric) and the other 12 using dual composite cement (Compolute). The samples were cut in the vestibulooral and mesiodistal direction and analyzed with an OPTON SV 8 stereomicroscope, with 160x magnification. Ideal adaptation of veneers after cementation with Tetric occured in 97.9% and good in 2.1% of cases. In the group cemented with Compolute ideal adaptation was determined in 95.8% and good in 4.2% of the samples. In neither group was poor adaptation established. In samples cemented with Tetric in vestibulooral direction complete adaptation was observed in 39.6%, negative adaptation in 43.8% (veneer was not completely seated on the cavity wall), and positive in 16.7% of the samples (veneer was higher than the surface of the prepared cavity). In the mesiodistal direction complete adaptation was recorded in 45.8% of the samples, negative in 39.6% and positive in 14.6%. After cementation with Compolute in the vestibulooral direction ideal adaptation was established in 51.1%, negative in 38.3% and positive in 10.6% of cases. In the mesiodistal direction complete adaptation was recorded in 52.1%, negative in 45.8% and positive in 2.1%. Difference in the quality of veneer adaptation in the vestibulooral and mesiodistal direction was not significant. Mean value of variations in the vestibulooral direction amounted to negative 493.80 μm and positive 388.96 μm. Mean value of variations in the mesiodistal direction amounted to negative 411.70 μm and positive 347.63 μm. Mean gap width after cementation with Tetric in the vestibulooral direction was 247.69 μm, and in the mesiodistal direction 156.56 μm. For the veneers cemented with Compolute mean gap width was 257.62 μm in the vestibulooral and 169.08 μm in the mesiodistal direction, which was not significant. The obtained results indicate that both materials are suitable for cementation of Cerec ceramic veneers.

3. Knežević A, Tarle Z, Meniga A, Šutalo J, Pichler G, Ristić M. Degree of Conversation and Temperature Measurement of Composite Polymerised with Halogen and LED-Curing Unit. Acta Stomatol Croat. 2003;37(2):159-68.
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   Title in English:	Degree of Conversation and Temperature Measurement of Composite Polymerised with Halogen and LED-Curing Unit
   Title in Croatian:	Mjerenje konverzije i temperature kompozita polimeriziranih halogenim i LED polimerizatorom
   Type of Article:	original scientific paper
   MeSH:	COMPOSITE RESINS
   Abstract:	Today available composite materials are polymerized by blue light, with a wavelength of about 468 nm. Commercially available curing units for composite resin polymerization emit blue light of different intensity. Using curing units of higher light intensity to reach a higher degree of conversion unavoidably leads to higher temperature rise in material during hardening, and also to polymerization shrinkage of material. The aim of this study was to determine if there is any difference between the degree of conversion and temperature rise in three composite materials: Amelogen (Akeda Dental, Denmark), Pertac II (ESPE, Seefeld, Germany) and Z100 (3M Dental Products, St. Paul, Minessotta, USA) polymerized with exponential program of Elipar Trilight curing unit (ESPE, Seefeld, Germany) and Lux-o-Max curing unit (Akeda Dental, Denmark) based on LED (light emitting diodes) technology. The results showed only a slightly lower degree of conversion, in the case of polymerization with Lux-o-Max curing unit. The temperature rise was significantly lower in the case of polymerization with Lux-o-Max curing unit for all tested composite materials.

4. Lončar-Rogoznica A, Lapter-Varga M, Muretić Ž, Meštrović S, Jurić M. Dento-Alveolar Compensation in Subject with Mandibular Prognathism. Acta Stomatol Croat. 2003;37(2):169-78.
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   Title in English:	Dento-Alveolar Compensation in Subject with Mandibular Prognathism
   Title in Croatian:	Dentoalveolarna adaptacija u ispitanika s mandibularnim prognatizmom
   Type of Article:	original scientific paper
   MeSH:	MALOCCLUSION PROGNATHISM
   Abstract:	Dento-alveolar adaptation in subjects with mandibular prognathism is the reason of clinical findings of almost normal occlusal and dental relationships between maxilla and mandible, despite of sagittal jaw. The purpose of this study was to obtain: the most significant characteristics of patients with mandibular prognathism; to find which variables quantitatively describe dento-alveolar adaptation and which of the used parameters have the most influence on achieving the normal relationship between the upper and the lower jaw as well to find the correlation between defining cephalometric variables. A sample of 62 cephalograms of subjects with mandibular prognathism both sexes, average age 18.7 years were analyzed. Cephalograms of eugnathic subjects were served as control. Eight dento-alveolar variables were observed: SNA, SNB, ANB, GIBG, DIBD, IIK, LA and LB, and statistical analysis were performed. As compared to eugnatic patients, all variables were significantly different, except SNA. The most signifficant decrease was found in the variable presenting the inclination of lower incisors in the relation to the mandibular base (DIBD), meaning that patients with mandibular prognathism have more retruded lower incisors which is a result of dento-alveolar adaptation. Significant correlations were found between variables SNB and ANB, DIBD and LB, and ANB and LB.

5. Knezović-Zlatarić D, Čelebić A, Brujić S. Alveolar Bone Loss on Abutment and Non-Abutment Teeth as Related to Removable Partial Denture Wearing. A Six Month Follow up Study. Acta Stomatol Croat. 2003;37(2):179-88.
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   Title in English:	Alveolar Bone Loss on Abutment and Non-Abutment Teeth as Related to Removable Partial Denture Wearing. A Six Month Follow up Study
   Title in Croatian:	Gubitak alveolarne kosti na zubima nosačima i nenosačima u nositelja djelomičnih proteza. šestomjesečno istraživanje
   Type of Article:	original scientific paper
   MeSH:	ALVEOLAR BONE LOSS DENTAL ABUTMENTS DENTURE, PARTIAL, REMOVABLE DENTAL PLAQUE INDEX
   Abstract:	Loss of interdental alveolar bony septum can be determined directly from a radiograph as the relation between the length of the interdental bony crest of the alveolus to the tooth apex and the distance from the cemento-enamel junction of the tooth to the tooth apex. The aim of this study was to measure the height of the interdental alveolar bone around the abutment and non-abutment teeth in removable partial denture wearers (RPD) on dental panoramic radiographs (DPR) over a period of six months. Twenty RPD patients (5 male, 15 female) participated in the study. The alveolar bone loss measurement was performed on DPRs, using Schei index, on each mandibular abutment and nonabutment tooth on its mesial and distal side, after the RPD delivery and six months later. Recordings of plaque index (PlI) were made at the mid-buccal, mid-palatal, mesio- and disto-palatal surfaces of all abutment and non-abutment teeth in the mandible after the RPD delivery and six months later. The results revealed a decrease in Schei index values, on both abutment and non-abutment teeth, which reached a statistically significant level for distal Schei index values of the abutment teeth and mesial and distal Schei index values of the non abutment teeth (p<0.05) in the 6 month period. There was no statistically significant difference in PlI values between the first and the second measurement (p>0.05). We concluded that the decrease in bone support on both abutment and non-abutment teeth was attributed to the high levels of PlI and probable low level of oral hygiene than to the RPD loading.

6. Ćelić R, Sutherland SE. Evidence-Based Dentistry: Do We Know What It Means?. Acta Stomatol Croat. 2003;37(2):189-98.
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   Title in English:	Evidence-Based Dentistry: Do We Know What It Means?
   Title in Croatian:	Stomatologija zasnovana na dokazu - znamo li što to znači?
   Type of Article:	professional paper
   MeSH:	EVIDENCE BASED MEDICINE EDUCATION, DENTAL
   Abstract:	To practice in an evidence-based dentistry manner, practitioners must be able to formulate a clear question, find the best available evidence efficiently, evaluate the evidence systematically and, if it is relevant and credible, apply the results of the appraisal to their practice. Materials, instruments, techniques, and therapies change so fast that most of us have difficulty keeping up with their names, much less the details of their use. As electronic technology (Internet, CD-ROM, and DVD) expands, information retrieval is increasingly easy. Patients have access to the same data that doctors do in many cases, and as their knowledge levels increase, so do their expectations and demands. Evidence-based dentistry closes the gap between clinical research and real world dental practice and provides dentists with powerful tools to interpret and apply research findings. Evidence-based dentistry process is not a rigid methodological evaluation of scientific evidence that dictates what practitioners should or should not do. Rather, the evidencebased dentistry process is based on integrating the scientific basis for clinical care, using thorough, unbiased reviews and the best available scientific evidence at any one time, with clinical and patient factors to make the best possible decision(s) about appropriate health care for specific clinical circumstances. Evidence-based dentistry relies on the role of individual professional judgment in this process.

7. Badel T, Pandurić J, Kraljević S, Dulčić N. Initial Treatment of Prosthetic Patients with a Michigan Splint. Acta Stomatol Croat. 2003;37(2):199-210.
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   Title in English:	Initial Treatment of Prosthetic Patients with a Michigan Splint
   Title in Croatian:	Inicijalno liječenje protetskih pacijenata michiganskom udlagom
   Type of Article:	professional paper
   MeSH:	PROSTHODONTICS + methods SPLINTS
   Abstract:	The Michigan splint covers all occlusal surfaces of the dental arch and is used in initial prosthetic treatment during the diagnosis and treatment of temporomandibular disorders. The most frequent indication is myalgia of the masticatory muscles and arthralgia of the temporomandibular joint. The splint eliminates symptoms and realises self-positioning of the mandible into a new position, which is acceptable for the patient. It can be worn for a longer period with the object of protecting the hard dental tissue due to bruxism. Because of stability and retention on the base the upper dental arch is more frequently chosen. The occlusal surface of the splint is fabricated in the form of flat surfaces on which equal contacts of the working cusps of the antagonistic jaws are achieved in the area of freedom in the centric. In excursive movements of the mandible disocclusion of the remaining teeth is realised, guided by the canine. Interrupted wearing of the splint follows during an interval of gradual disuse and reduction in the period of wearing. Success of the treatment is conditioned by careful fabrication of the splint in the articulator, regular check-ups while wearing the splint and occlusal relations.

8. Šegović S, Anić I, Stipetić-Ovčariček J, Galić N, Pavelić B. Microleakage of Postendodontic Systems. Acta Stomatol Croat. 2003;37(2):211-9.
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   Title in English:	Microleakage of Postendodontic Systems
   Title in Croatian:	Mikropropusnost poslijeendodontskih sustava
   Type of Article:	original scientific paper
   MeSH:	DENTAL LEAKAGE MARGINAL ADAPTATION (DENTISTRY) POST AND CORE TECHNIQUE
   Abstract:	The aim of this paper is to emphasize the importance of following the proper rules for performing a procedure, such as making a postendodontic post and core system. A postendodontic system should provide retention and resistance of the restoration, resistance of the remaining tooth structure and good sealing of the root canal. Microleakage can occur in the root canal filling as well as in the post and core system. After preparation of the intraradicular post space remains apical root canal filling which is 3-5 mm in length, and is a questionable barrier to prevent microorganisms and their toxins from penetrating into the periradicular tissue. Therefore, one should use the proper techniques in aseptic conditions during post and core treatments.