Influence of Different Factors on the Rate of Residual Ridge Resorption in Complete Denture Wearers

Gubitak bezubog alveolarnoga grebena (RRR) stalan je proces koji dovodi do smanjenja visine lica i rotacije čeljusti u smjeru obrnutom od kretanja kazaljke na satu. Smatra se da lokalni i sustavski čimbenici utječu na RRR. Svrha rada bila je analizirati iznos RRR na 5 različitih mjesta gornje i donje čeljusti na lateralnim telerengenogramima u razdoblju od godine dana. Mjeren je iznos resorpcije rezidualnih alveolarnih grebena na 5 različitih mjesta obiju čeljusti na postraničnim telerendgenogramima kod 50 nositelja potpunih proteza u razdoblju od jedne godine, a također je analiziran i doprinos nekih čimbenika na iznos resorpcije. Visina bezubih grebena mjerena je na 5 mjesta bezubih grebena gornje i donje čeljusti prigodom predaje proteza i nakon razdoblja od jedne godine uz uporabu kalibrirane mrežice. Hijerarhijska regresijska raščlamba napravljena je kako bi se ustanovio udio pojedinih čimbenika na iznos resorpcije. Hijerarhijska regresijska raščlamba čimbenika kao što su indeks mase tijela,spol, dob, vrijeme bezubosti, broj prijašnjih proteza, nošenje proteza danju i / ili danju i noću, vrijeme proteklo od menopauze u žena, površina ležišta proteza i mjesto posljednje ekstrakcije pokazala je da jedini važni čimbenici koji pridonose RRR u jesu razdoblje bezubosti i broj prijašnjih proteza (p < 0,05). Vrijeme bezubosti i broj prijašnjih proteza (p < 0,05) znatno su pridonijeli iznosu resorpcije rezidualnih alveolarnih grebena u razdblju od godine dana.Alveolar bone loss (RRR) is a continous process leading to a reduction of the morphological face height and counterclockwise rotation of the mandible. It has been speculated that both systemic and local factors contribute to RRR. The aim of this study was to analyse the rate of RRR in five different regions of both jaws on lateral cephalograms. The rate of RRR was analysed in five different regions of both jaws in lateral cephalograms of 50 complete denture wearers during a one year period and the contribution of some factors to the rate of RRR was also analysed. 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. Hierarchic regression analysis was made to reveal the contribution of different factors to RRR. Hierarchic regression analysis was made (the factors included were: body, mass index, gender, age, time of edentulousness, number of previous dentures, night-time denture wearing, period od postmenopause in women, surface of denture bearing area and place of last extraction) and revealed that the only statistically significant factors contributing to RRR was the period od edentolousness and number of previous dentures (p < 0.05). The period of edentulousness and number of previous dentures (p < 0.05) contributed significantly to the rate of RRR

Evaluation of Denture Stomatitis in Croatian Adult Population

Denture stomatitis (DS) is often found under the removable partial dentures (RPDs). There are many factors influencing it, such as patient’s age and gender, smoking habits, denture age, denture material, denture wearing habits, denture hygiene habits, oral hygiene instruction, denture cleanness and denture plaque accumulation. The aim of this study was to find out the influence these factors have on the prevalence of DS under RPDs and complete dentures (CDs). A total of 200 patients took part in this study. Half of the examined patients (100) wore CD and the other half (100) RPDs. There were 63 males and 137 females, aged between 45 and 83 years. Different smoking habits, denture wearing habits, denture hygiene habits, denture cleanness and oral hygiene instructions had significant influence on the degree of DS in CD wearers (p < 0.01). In the RPD wearers, denture material and denture support had a significant influence on DS (p < 0.01). The significant correlation was found between the denture plaque accumulation and the DS in complete maxillary and mandibular ( U = 0.85; L = 0.61) and removable maxillary and mandibular partial dentures ( U = 0.45; L = 0.62)

Evaluation of Denture Stomatitis in Croatian Adult Population

Denture stomatitis (DS) is often found under the removable partial dentures (RPDs). There are many factors influencing it, such as patient’s age and gender, smoking habits, denture age, denture material, denture wearing habits, denture hygiene habits, oral hygiene instruction, denture cleanness and denture plaque accumulation. The aim of this study was to find out the influence these factors have on the prevalence of DS under RPDs and complete dentures (CDs). A total of 200 patients took part in this study. Half of the examined patients (100) wore CD and the other half (100) RPDs. There were 63 males and 137 females, aged between 45 and 83 years. Different smoking habits, denture wearing habits, denture hygiene habits, denture cleanness and oral hygiene instructions had significant influence on the degree of DS in CD wearers (p < 0.01). In the RPD wearers, denture material and denture support had a significant influence on DS (p < 0.01). The significant correlation was found between the denture plaque accumulation and the DS in complete maxillary and mandibular ( U = 0.85; L = 0.61) and removable maxillary and mandibular partial dentures ( U = 0.45; L = 0.62)

Electromyographic Evaluation of the Influence of Denture Adhesive on Retention and Stability of Complete Dentures

Improving retention and stability of complete dentures is of considerable interest in prosthetic dentistry. Approaches to this problem over the years have included overdentures, implants and denture adhesives. Although denture adhesives are widely used, there are few quantitative data on the effects of an adhesive on denture retention and stability during normal functional activities. The purpose of this investigation was to study the influence of denture adhesive on the surface EMG activity of the masticatory muscles in a sample of complete denture wearers. In this study 6 denture wearers were investigated. Surface EMG recordings were obtained from left and right anterior temporal and masseter muscle and from the sub-mandibular group in the region of the anterior belly of the digastric muscle on the left and right side. Data were recorded during standardized jaw positions that included clenching in the position of maximal intercuspation of teeth (at 100%, 50% and 25% of the maximum activity), lateral eccentric positions, maximal lateral eccentric positions, protrusion, maximal protrusion and wide opening. The results demonstrated higher digastric muscle activity in protrusion with the teeth at an edge-toedge position after the use of adhesive (p0.05). This investigation demonstrated that patients were able to produce greater levels of muscle activity in protrusive and laterotrusive positions with the use of adhesive

The Rate of Resorption of Different Regions of Residual Ridges in Complete Denture Wearers Dependent on the Region and the Period Following the Last Extraction. One Year Study.

Residual alveolar ridges (RR) show continual resorption after the loss of the natural dentition, resulting in reduction of the morphologic face height and counterclockwise rotation of the mandible, regardless of whether the dentures are worn or not. The aim of this study was to analyse residual ridge resorption (RRR) in 5 different regions of both jaws on the successive lateral cephalograms of 50 complete denture wearers and to correlate such changes with the number of years of edentia and the region where the last extraction was performed. The height of the residual ridges was measured on 5 different sites of the mandible and the maxillary RR using a calibrated grid. The results revealed that all the patients showed significant RRR in the one year period (p<0.01), which was 2.5x more in the mandible than in the maxilla. RRR was bigger in patients who had had their last extraction within a period of one year before receiving their dentures, than in patients who had extracted their teeth earlier (p<0.01). However, the rate of RRR was significantly higher (p<0.01) in the anterior regions of both jaws compared to distal regions (0.41 and 0.42 mm in the incisive/canine region: 0.2 and 0.17 mm in the premolar/ molar region for the maxilla 1.05 and 0.82 mm in the incisive/canine region : 0.27 and 0.11 in the premolar/ molar region for the mandible), even in patients where the last extraction was performed in the premolar region. It seems that the structure of the bone and strains in RR, due to loading from the dentures, may play a role, not only the period following extraction and the region of the last extraction

The Rate of Resorption of Different Regions of Residual Ridges in Complete Denture Wearers Dependent on the Region and the Period Following the Last Extraction. One Year Study.

Residual alveolar ridges (RR) show continual resorption after the loss of the natural dentition, resulting in reduction of the morphologic face height and counterclockwise rotation of the mandible, regardless of whether the dentures are worn or not. The aim of this study was to analyse residual ridge resorption (RRR) in 5 different regions of both jaws on the successive lateral cephalograms of 50 complete denture wearers and to correlate such changes with the number of years of edentia and the region where the last extraction was performed. The height of the residual ridges was measured on 5 different sites of the mandible and the maxillary RR using a calibrated grid. The results revealed that all the patients showed significant RRR in the one year period (p<0.01), which was 2.5x more in the mandible than in the maxilla. RRR was bigger in patients who had had their last extraction within a period of one year before receiving their dentures, than in patients who had extracted their teeth earlier (p<0.01). However, the rate of RRR was significantly higher (p<0.01) in the anterior regions of both jaws compared to distal regions (0.41 and 0.42 mm in the incisive/canine region: 0.2 and 0.17 mm in the premolar/ molar region for the maxilla 1.05 and 0.82 mm in the incisive/canine region : 0.27 and 0.11 in the premolar/ molar region for the mandible), even in patients where the last extraction was performed in the premolar region. It seems that the structure of the bone and strains in RR, due to loading from the dentures, may play a role, not only the period following extraction and the region of the last extraction

Relationship Between the Face and the Tooth Form

The aim of this study was to re-examine Leon Williams geometric theory and to find the degree of correspondence between the face and the tooth form in the population of Zenica, Bosnia and Herzegovina. Two thousand individuals with intact frontal teeth, in age between 17 and 24 years, were measured for 3 horizontal distances on the face: temporal width (Ft-Ft), zygomatic width (Zyg-Zyg) and gonial width (Go-Go) and for 3 horizontal distances on the both upper incisors: cervical width (CW), contact point width (CPW) and incisal width (IW). The length of the face (Tr-Gn) as well as the length of the central maxillary incisors were also measured. The results revealed: 1. Men had significantly larger dimensions for all facial and tooth dimensions (p < 0.05) than women, except for the cervical tooth width (p > 0.05); the left and the right central incisors were of identical dimensions and forms (p > 0.05). 2. The width of upper central incisors were smaller approximately 1.5 mm than in west Europeans. 3. Upon the relation between the 3 horizontal dimensions measured on the face and upper maxillary incisor, 11 facial forms and 10 upper central tooth forms could be recognised in the study population, but 98% of the population had only 3 tooth and face forms. Face shapes: oval face – 83.3%, square-tapered face – 9.2% and tapered face – 7%; tooth forms: tapered-square incisor – 53%, oval incisor – 30%, tappered incisor – 16%. 4. Reversed and enlarged tooth form was in line associated with the facial form in only 30%, while the most common combination was of the oval face form and the tapered-square central incisor (45%). 5. These results disapprove William’s theory and may be helpful for the choice of artificial teeth in complete denture construction and the dental industry

The Satisfaction with the Removable Partial Denture Therapy in the Croatian Adult Population

Little is known about the outcomes of treatment and patient’s satisfaction with removable partial dentures in adult Croatian population. Therefore patient’s satisfaction with their partial dentures in relation to some socio-economic variables was studied. Patient’s satisfaction with denture retention, speech, aesthetics, comfort of wearing dentures, chewing ability was also studied in relation to different denture classification, construction, material, denture base shape (major connectors), denture support and the number of missing teeth. A total of 165 patients, 59 males and 105 females between 38 and 87 years took part in this study. A questionnaire, devised for a purpose of the study, was divided into three parts. In the first part, patients answered questions about age, gender, marital status, education, general health, socio-economic status, self-supporting life, period of tooth loss and number of previous denture experiences and in the second part, patients graded their partial dentures, depending on the level of satisfaction, by using a scale from 1 to 5. In the third part a dentist determined Kennedy classification and their modifications, denture material and denture support, denture base shape and the number of missing teeth and graded a denture construction. Influence of these factors on patient’s satisfaction was analyzed. A majority of the examined patients were satisfied with the partial prosthesis, but a small amount of dissatisfaction existed. More then half of them scored all the examined parameters to the best score category. Considering chewing with lower partial dentures, women were more satisfied than men (p <0.05). Patients with more missing teeth gave lower grades for the comfort of wearing dentures (p<0.05). Patients of higher education gave lower grades (p<0.05) for the aesthetics. Patients were not satisfied with speech if the dentist graded a construction of alower partial denture low (p<0.05). Dissatisfaction was related to mastication, aesthetics, number of missing teeth and ability of speech. These findings can aid a clinician in discussing a treatment plan and help a patient understand the risk of dissatisfaction in the presence of certain factors

Evaluation of tuberculous meningoencephalitis by computerized tomography: a case report

Prikazali smo slučaj trogodišnje djevojčice s laboratorijski potvrđenim tuberkuloznim meningoencefalitisom i neurološkim komplikacijama koje su se razvile u kliničkom tijeku bolesti unatoč primjeni antituberkulozne terapije. Prikazana je CT evaluacija tuberkuloznog meningoencefalitisa koja je u početku bolesti pokazivala samo edem mozga, a u daljnjem tijeku i znakove meningitisa s hiperdenznim subarahnoidalnim bazalnim prostorima. U subakutnoj fazi CT-om su se verificirali ishemijski infarktni procesi bazalnih ganglija te znaci cerebritisa i ventrikulitisa. Neurokirurška intervencija pridonijela je regresiji hidrocefalusa, koji postaje normotenzijski uz razvoj frontalnih efuzija. Evaluacija tuberkuloznog meningoencefalitisa kompjuteriziranom tomografijom u Hrvatskoj je relativno rijetka te želimo kliničare podsjetiti na mogućnosti aplikacije CT-a i njegovu vrijednost u sličnim slučajevima.We present a case of a three-year-old girl with laboratory confirmed tuberculous meningoencephalitis and neurological complications that developed during the clinical course of disease despite antituberculous therapy. Computerized tomography evaluation of tuberculous meningoencephalitis is shown. Brain edem was the initial process. In addition, characteristic CT signs of meningitis with hyperdense basal subarachnoid spaces occurred. In the subacute phase ischemic infarcts in basal ganglions and the signs of cerebritis and vasculitis were visualised. Neurosurgical interventions improved the regression of hydrocephalus that became normotensive with the development of frontal effusions. The evaluation of tuberculous meningoencephalitis with CT scans in Croatia is rare and we want to remind the clinicians on the possibilities of CT application and its value in such cases

Satisfaction with Removable Denture Therapy in Complete and Partial Denture Wearers

The aim of this study was to evaluate patients’ satisfaction with their dentures, with denture retention, speech, chewing ability and the comfort of wearing dentures in complete denture (CD) and Kennedy Class I removable partial denture (RPD) wearers The aim was also to compare the level of satisfaction between the CD and RP wearers. A total of 156 CD and 103 RPD wearers took part in this study. Patients graded their satisfaction by using an analogue-visual scale from 1 to 5. The statistical analysis was made (descriptive statistics, Kolmogorov-Smirnov one sample test, Mann-Whitney test). The following conclusions were made: Both CD and RPD patients were mostly satisfied with their dentures (the distribution of the scores of the patients’ assessments was not as described by Gauss, but was skewed towards the highest scores). Variables were ranged from the best to the worst grades in the group CD wearers as follows: retention of upper CD, comfort of wearing upper CD, speech, aesthetic, overall satisfaction, chewing ability, retention of lower CD and comfort of wearing lower CD. Variables were ranged from the best to the worst grades in the group of RPD wearers as follows: aesthetics, retention of upper RPD, comfort of wearing lower RPD, speech, retention of lower RPD, overall satisfaction, chewing ability and comfort of wearing lower RPD. The difference of the satisfaction between RPD and CD wearers was significant (p<0.05) for the comfort of wearing lower denture (higher scores RPD wearers), for the retention of lower denture (higher scores RPD wearers), and for chewing ability (higher scores CD wearers)