List of Articles by Author

NOTES:

*This author has been accepted with these names:

Baučić, Maja
Baučić, M

*Articles are cited according to Uniform Requirements by International Committee of Medical Journal Editors - ICMJE and NLM Style Guide for Authors, Editors and Publishers

Petričević N, Čelebić A, Baučić M, Antonić R. Importance of Hamular Distance for Calculation of the Width of Maxillary Anterior Teeth. Acta Stomatol Croat. 2005;39(3):285-94.

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Title in English:	Importance of Hamular Distance for Calculation of the Width of Maxillary Anterior Teeth
Title in Croatian:	Važnost hamularne udaljenosti prigodom izbora širine gornjih prednjih zuba
Type of Article:	original scientific paper
MeSH:	CEPHALOMETRY ORTHODONTICS
Abstract:	Without pre-extraction photographs or casts it is not easy to select suitable artificial teeth.The aim of this study was to determine the relationship between the width of frontal maxillary teeth and the width of the hard palate. The aim was also to determine the possibility of reconstructing maxillary frontal teeth dimensions, based on hard palate dimensions.Teeth and hard palate dimensions were measured on maxillary casts of 80 fully dentate individuals (26 men and 56 women) of Angle class I occlusal relationship.The maxillary central incisor is the widest among the frontal maxillary teeth and canines are wider than second incisors. The width of the maxillary frontal teeth arch, measured with a flexible ruler is 52.05 mm, hamular distance 47.1 mm, distal maxillary width 46.1 mm, sum of the widths of all maxillary frontal teeth 46.04 mm, frontal maxillary width 35.8 mm, and finally the width between canine cusp tips is 34.19 mm.Based on the results of this study, the sum of all maxillary frontal teeth widths is equivalent to hamular distance dimension, as well as distal maxillary width, as there were no statistically significant differences between them. After extraction of all teeth, distal maxillary width is lost, which is not possible to reconstruct because of the individual rate of alveolar bone resorption. On the other hand, hamular distance remains the same dimension during the lifetime, because it is not determined by teeth position but by anatomical structures. Therefore, the hamular distance dimension is a suitable reference for determination of the dimension of the sum of all maxillary frontal teeth widths.

Kovačić I, Čelebić A, Kovačić F, Knezović-Zlatarić D, Baučić M, Mehulić K. Influence of Night-Time of Denture Wearing on the Rate of Alveolar Ridge Resorption in Complete Denture Wearers. A One-Year Study. Acta Stomatol Croat. 2004;38(1):27-38.

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Title in English:	Influence of Night-Time of Denture Wearing on the Rate of Alveolar Ridge Resorption in Complete Denture Wearers. A One-Year Study
Title in Croatian:	Utjecaj nošenja proteza noću na iznos resorpcije alveolarnog grebena u nostielja potpunih proteza - jednogodišnje istraživanje
Type of Article:	original scientific paper
MeSH:	ALVEOLAR BONE LOSS + etiology DENTURE, COMPLETE + adverse effects
Abstract:	Alveolar bone loss (RRR) is a continuous process following tooth extraction, more pronounced during the first few month after the tooth extraction than later. The RRR in the mandible is twice that of the maxilla during a 1-year period and the mandibular: maxillary resorption ratio increases further to 4:1 after 7 years. The RRR results in reduction of face height and counterclockwise rotation of the mandible. So far, the etiology of RRR has not been elucidated. It has been speculated that both systemic and local factors contribute. However, one of the local factors is daytime or daytime and night time denture wearing. The aim of this study was to analyze the rate of RRR in five different regions of both jaws on lateral cephalograms of 100 complete denture wearers during a one-year period and to compare the rate of RRR in daytime only and daytime + night-time denture wearers. The height of residual ridges was measured on 5 different sites at the delivery of the dentures and a year later using a calibrated grid. The results revealed significant RRR in the one year period (p<0.01), which was 2.5x bigger in the mandible than in the maxilla. Higher rate of RRR was recorded at frontal sites of the maxillary and mandibular residual ridges compared to lateral sites (p<0.01). Night-time denture wearing made no significant influence on the rate of RRR on any of the five examined sites of the maxilla or the mandible (p>0.05).

Baučić M, Baučić I, Čelebić A, Stipetić J, Prohić E, Miko S. Biocorrosion Behavior of High Noble Au-Pt Dental Alloy in Different Solutions and pH Values. Acta Stomatol Croat. 2003;37(3):309.

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Stipetić J, Čelebić A, Baučić I, Rinčić N, Ćatić A, Baučić M. The Release of Nickel Ions from Three Different Dental Casting Alloys. Acta Stomatol Croat. 2002;36(4):381-95.

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Title in English:	The Release of Nickel Ions from Three Different Dental Casting Alloys
Title in Croatian:	Otpuštanje iona nikla iz triju različitih zubnih slitina
Type of Article:	original scientific paper
MeSH:	DENTAL ALLOYS + adverse effects NICKEL
Abstract:	The objective of the current study was to investigate the release of Ni ions from the following three dental casting alloys: high-noble Au-Pt alloy, and non-noble (base metal) Ni-Cr and Co-Cr- Mo alloys. The purpose of the study was also to determine whether the solution in which an alloy is submerged as well as its pH level and the exposure time have any effect on the amount of released Ni ions from the three above mentioned alloys. Three commercial alloys were used in the experiments: two base metal alloys, Ni-Cr (Wiron 99®, Bego, Germany) and Co-Cr-Mo alloy (Wironit®, Bego, Germany) and one high noble, Au-Pt alloy (Noble Metals Refinery, Zagreb, Croatia). Ni-Cr alloy samples and Co-Cr-Mo alloy samples, rollers of identical dimensions with diameters of 8 mm and heights of 15.8 mm were used, made by the manufacturer. The samples of Au-Pt alloy were plates with dimensions of 8 mm and height of 1 mm, also made by the manufacturer. All the samples were submerged in three different solutions over a certain period of time. The phosphate buffered solution at the pH = 6 level, rapresented human saliva, whereas lactic acid, to which certain amounts of acetic and formic acids, pH=3.5 (0.1 M lactic acid, 0.1 M NaCl, 1% acetic acid and 1% formic acid) were added to represent the condition that is created below dentobacterial plaque. The phosphate buffered solution ( pH=3.5), which was composed according to established pharmacopeical standards was used for comparison, since such extremely acid conditions do not exist in the oral cavity environment. Six samples were used for each tested dental alloy (n=6), for each solution separately and for each tested time interval, and thus 180 samples were used or 540 samples in total. The ion release from the above tested dental alloys in the above mentioned solutions was measured over 10 time intervals, i.e. after 1, 2, 3, 4, 5, 6, 7, 14, 21 days and 30 days respectively. Solutions were analysed by atomic absorption spectrometar with inductively coupled plasma (ICP - AES) JY 50, France. Results of the analysis lead to the following conclusions:1. In the following dental alloys (Ni-Cr, Au-Pt, Co-Cr-Mo) the manufacturer states the presence of Ni only in Ni-Cr alloy. Resultsshow that Ni-Cr alloy and Co-Cr-Mo alloy released Ni ions, but the Au-Pt alloy did not, even at low pH levels.2. During the initial period of exposure Ni ions were released from the Co-Cr-Mo alloy in small amounts (10 μg/L) while increase in ion release was observed on the sixth day in the phosphate buffered saline at pH 3.5. Significant Ni ions release also occurred on the 21st day and 30th days respectively in the phosphate buffered solution at pH 6 (artificial saliva) as well as in lactic acid at pH 3.5 (dentobacterial plaque) when amount of the Ni ion release exceeded the approved daily dietary intake of this oligo-element.3. The Ni-Cr alloy released great amounts of Ni ions in all three solutions so that on the very first day of measurement these amounts exceeded the approved daily dietary intake of this element. Gradually, the amount of the released Ni ions increased with great variability in all solutions. However, the greatest increase in Ni ions release was noted in the phosphate buffered saline, at pH 6 level (artificial saliva) where it exceeded the approved daily dietary intake of this element. Therefore, this alloy should be used exclusively for fabrication of metal-ceramic appliances and should be fully covered by ceramic.

Baučić I, Baučić M, Stipetić J, Čelebić A, Rinčić N, Bratolić V, Miko S. A Comparison of Trace Element (TE) Release from High Noble Au-Pt Alloy and Base Co-Cr-Mo Alloy Under In Vitro Conditions of Imitating Oral Saliva. Acta Stomatol Croat. 2002;36(3):346.

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Title in English:	A Comparison of Trace Element (TE) Release from High Noble Au-Pt Alloy and Base Co-Cr-Mo Alloy Under In Vitro Conditions of Imitating Oral Saliva
Title in Croatian:	nema
Type of Article:	congress abstract
MeSH:	TRACE ELEMENTS + analysis DENTAL ALLOYS + analysis SALIVA + chemistry
Abstract:	In a moist environment electrochemical conditions lead to release of metal ions into the patient's saliva. The aim of this study was to examine and compare the types and quantities of metal ions released from two alloys: AuPt alloy and Co-Cr-Mo alloy under in vitro conditions, imitating artificial saliva. We soaked ten sets of Au-Ptalloy pieces having 133 mm2 exposure surface and ten sets of Co-Cr-Mo alloy (WironitR, Bego, Germany) pieces having 497 mm2 exposure surface for 1, 2, 3, 4, 5, 6, 7, 14, 21 and 30 days (six pieces each set) in phosphate buffered saline (pH 6.0) to mimic dental saliva. TE in the phosphate buffered saline (saliva) were assessed by ICP-AES (JY 50P, Jobin-Ywon, France) with the detectionlimit of 10 mg/L. We found detectable amounts (mg/L) of TE (Mean SD) released from Au-Pt alloy (Mean SD): Zn 124 (51), Cu 53 (63), Fe 15 (11) and Cr 18 (25) and detectable amounts of TE released from Co- Cr-Mo alloy (Mean SD): Co 337 (170), Fe 21 (15) Zn87 (56), Ni 41 (68), and Cr 49 (42). The manufacturer did not indicate the presence of Zn and Fe in the Au-Pt alloy and the presence of Fe, Zn, and Ni in the Co-Cr- Mo alloy. Significantly higher amount of Zn was released from high noble AuPt alloy than from Co-Cr-Mo alloy (p<0.05) and a significantly higher amount of Cr wasreleased from Co-Cr--Mo alloy than from Au-Pt alloy. There was no significant difference in the amount of Fe ions released between the two alloys (p>0.05). We must keep in mind that the amount of released TE may be much higher than the reported values after laboratory procedures (casting, polishing, etc.) and, moreover, other TE may become detectable.

Baučić I, Stipetić J, Lazić B, Komar D, Mehulić K, Baučić M. Evaluation of Fixed Prosthodontic Appliances after Five Years of Use Using Orthopantomographic Screening in Relation to Material. Acta Stomatol Croat. 2002;36(2):243-52.

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Title in English:	Evaluation of Fixed Prosthodontic Appliances after Five Years of Use Using Orthopantomographic Screening in Relation to Material
Title in Croatian:	Vrjednovanje fiksnoprotetskih radova od pet godina u odnosu prema materijalu izradbe temeljem nalaza na ortopantomogramima
Type of Article:	original scientific paper
MeSH:	DENTURE, PARTIAL, FIXED RADIOGRAPHY, PANORAMIC
Abstract:	The aim of this study was to screen patients with fixed prosthodontic appliances, in the mouth for a period of 5 years or more, for root caries and pocket formation, deeper than 3 mm. The aim was also to determine the difference between frequency of pathologic findings for different materials of fixed prosthodontic appliances (FPA), or between abutments and natural teeth. A total of 260 patients (55% women and 45% men) aged from 25 to 70 years, who had a fixed prosthodontic appliance for a period of 5 years or more in their mouth and who were fully satisfied, participated in the study. A total of 260 orthopantomographs were analysed with 2265 teeth, 864 were abutments of the bridges, 407 crowns and the rest natural teeth. Radiographs were analysed for root caries and pocket formation. The results reveal relatively high incidence of pathologic findings (caries, periodontal pockets > 3 mm) in patients with FPDs older than 5 years. Periodontal pockets were more frequent than cervical caries. The highest frequency of pathologic findings was registered for abutments with metal acrylic crowns, and the lowest frequency of pathologic findings was registered for abutments with metal-ceramic crowns (p<0.05). There were no significant differences between abutments with metal-ceramic crowns and non-abutment teeth (p>0.05). There were no significant differences in caries incidence between the examined teeth (p>0.05). Non-abutment teeth and abutments of metal-ceramic crowns had significantly lower frequency of pockets deeper than 3 mm than abutments of metal acrylic and fullmetallic crowns (p<0.05).