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Biomedical subjects

M M Kuftinec

Publications and source records attributed to M M Kuftinec.

At least 19 recordsLinked to original sources
PubMed1991

A comparative study of stability after mandibular advancement surgery.

The postsurgical stability of two groups of patients treated with different fixation techniques after mandibular advancement was evaluated retrospectively. Sixteen patients (group 1) underwent rigid osseous fixation, and another group of 16 patients (group 2) underwent intraosseous wiring fixation. Our findings suggested that skeletal and dental changes occurred in both groups as a result of adaptation to the altered functional equilibrium. Relapse resulting in a percentage loss of the initial advancement occurred primarily 6 to 8 weeks postsurgically. No statistically significant difference was found to exist in the short-term and long-term rates between the two groups. For the population studied, relative stability after mandibular advancement surgery was affected more by individual variability than by the fixation technique.

Bone Screws↗
PubMed1990

The relationship between bite depth and incisor angular change.

A geometric, two-dimensional model was developed, which estimates the effect of changing incisal angular position to the effective bite depth. Because of the constant lengths of incisors whose long axes can be viewed as the sides of a triangle, it is possible to calculate the amount of their overlap as a function of changing angle. Additionally, a distinction is made between controlled and uncontrolled tipping, defined in respect to their centers of rotation. It is suggested that an average of 0.1 to 0.2 millimeter change in overbite occurs for every degree of incisal angular change.

Humans↗
PubMed1990

Sanguinaria toothpaste and oral rinse regimen clinical efficacy in short- and long-term trials.

Short- and long-term testing of sanguinaria toothpaste and oral rinse used individually have yielded both positive and negative results. This review evaluates the results of a number of clinical trials testing the regimen use of sanguinaria products for periods ranging from 14 days to six months. Review of these trials establishes the clinical efficacy of the two products in combination. The regimen approach produces consistently positive reductions in plaque, gingival inflammation and bleeding parameters for up to six months with no adverse hard tissue effects and only one reversible adverse soft tissue effect observed among the 260 subjects tested. In addition, no adverse microbiological shifts in the normal oral flora were observed.

Alkaloids↗
PubMed1989

Maxillary canine-lateral incisor transposition--orthodontic management.

A case of maxillary canine-lateral incisor complete transposition is presented. Treatment options for transposed teeth, including alignment in their transposed positions, extraction of one or both transposed teeth, and orthodontic alignment to their normal positions in the arch, are discussed. The orthodontic technique and sequence used in this challenging case to align the fully transposed teeth to their normal position in the dental arch are described.

Child↗
PubMed1989

Cephalometric appraisal of patients treated with fixed lingual orthodontic appliances: historic review and analysis of cases.

In the first part of this article, a retrospective look was taken of evolvement and progression in design of the lingual fixed orthodontic appliance. The second part is a retrospective study of treated lingual cases. By the use of standardized cephalometric radiographs, selected treatment parameters were analyzed:--namely, bite opening, changes in mandibular position, inclination, torque and intrusion of incisors, and soft-tissue effects. For the clinician who uses this treatment modality, the most significant effects are the bite opening, intrusion of the mandibular incisors (particularly in extraction cases), and limited reduction of lower lip protrusion. The mandibular plane angle and torque and inclination of incisors did not follow a consistent and predictable pattern. On the basis of the study's findings, it is suggested that lingual fixed appliance therapy is a useful supplement to our treatment modalities; good results are both realistic and possible.

Cephalometry↗
PubMed1989

Long-term clinical evaluation of toothpaste and oral rinse containing sanguinaria extract in controlling plaque, gingival inflammation, and sulcular bleeding during orthodontic treatment.

A sanguinaria-containing toothpaste and oral rinse regimen was evaluated during a 6-month period to determine its effectiveness in controlling plaque, gingival inflammation, and sulcular bleeding. Oral hygiene instructions and a 1-month prestudy brushing period failed to produce a significant improvement in health among the 24 subjects as determined by the three evaluation parameters. After the oral hygiene period, the subjects were randomly assigned to the active treatment (marketed Viadent toothpaste and oral rinse) or the placebo treatment (same base formulas without sanguinaria). Treatments were evaluated using the Löe and Silness gingival index, the Silness and Löe plaque index, and the Mühlemann and Son sulcular bleeding index at baseline and monthly through 6 months. The sanguinaria regimen reduced plaque by 57%, gingival inflammation by 60%, and sulcular bleeding by 45% from baseline compared with placebo group reductions of 27% (plaque) and 21% (gingival inflammation), and an increase of 30% in bleeding index. Repeated-measures analysis of covariance with baseline scores used as covariates showed statistically significant differences at 6 months for plaque (active 0.39; placebo 0.68, p less than 0.01), gingival inflammation (active 0.32; placebo 0.76, p less than 0.001), and sulcular bleeding (active 0.34; placebo 0.70, p less than 0.002). Results of this study demonstrated that the combined use of the sanguinaria-containing toothpaste and oral rinse controls and reduces plaque and gingival inflammation in an orthodontic population.

Adolescent↗
PubMed1989

Tooth transpositions--a review of the literature and treatment considerations.

This paper defines tooth transposition and discusses its history, incidence and possible etiology. An interesting parallel is drawn between tooth transposition and other dental anomalies (number, size, shape and location of teeth). Treatment options are discussed in terms of the age at which the transposition is discovered, as well as in terms of severity and completeness of the anomaly. While a logical and relatively predictable treatment solution should normally be considered, in some selected cases it may be prudent to venture into more complex treatment solutions.

Adolescent↗
PubMed1989

Multiple supernumerary teeth. Report of two cases.

Multiple supernumerary teeth scattered in both jaws are reported in two patients. In the young patient, all supernumerary premolars were found to be at different stages of crown development and in the adult patient, all supernumerary teeth had fully formed roots.

Adolescent↗
PubMed1986

Bonding characteristics of impacted versus erupted permanent teeth.

Erupted and impacted teeth from young (12 to 24 years of age) and older persons (over 50 years of age) were bonded by a standard technique using etching times of 0, 15, 30, and 60 seconds. Two subgroups of teeth were soaked for 7 days and compared with those in the remainder of the group. Test specimens were loaded in shear to bond failure by means of a testing machine with a 200- kg load cell and a crosshead speed of 5 mm/minute. Results indicated insignificant bond-strength differences between young-impacted and young-erupted teeth for any given etching time. Very small bond-strength differences were found for various etching times (15, 30, and 60 seconds). A significant difference was found between 24-hour soak and 7-day soak for the etching times of 30 and 60 seconds only.

Adolescent↗
PubMed1978

Endodontic-orthodontic management of fractured anterior teeth.

A case history is presented of a 10-year-old patient, who accidentally injured her maxillary central incisor. The fracture of the crown extended 2 mm below the crest of the alveolar bone. After a pulpotomy was done as a temporary measure, orthodontic appliances were placed by bonding brackets on the maxillary anterior teeth and fitting a sectional arch wire to extrude the fractured tooth. After successful extrusion, the fracture line was brought above the level of alveolar bone where successful restoration of the tooth by the acid-etch method could be accomplished.

Child↗
PubMed1976

Nutrition in growth and development of oral tissues.

The development of teeth, salivary glands, and other oral tissues can be seriously compromised by a deficiency of a number of essential nutrients. Because nutritional stress during critical development periods may decrease the ultimate resistance of the oral tissues to challenge, the prevention of disease and maintenance of oral health are intimately dependent on the nutrient supply during development. Appropriate dietary counseling, particularly with reference to critical developmental times and intake of essential nutrients, can insure optimal oral tissue development.

Calcium↗
PubMed1975

Bone growth in the neonatal rat. II. Biochemical aspects of bone mineral incorporation.

Long bones and mandibles from neonatal rats were studied to characterize the mechanisms regulating their growth and to describe the patterns of bone mineral acquisition. Mineral uptake was determined by measuring the rates of incorporation of radioactive calcium (45Ca) into three metabolic pools within, or intimately surrounding, the bone. The incorporation into the pool of protein-bound calcium was low throughout the neonatal period, accounting for no more than 1% of the total calcium uptake during this period. The ionized calcium concentration, which was low throughout, increased at the time when formation of the mineral phase was found to be high. The largest fraction of the mineral, the complexed calcium, showed a gradually increasing rate of incorporation, lasting approximately until the age of weaning. The two bony tissues differed somewhat in the slopes at which the incorporation rates changed. From these studies of bone growth, it appears that the process of bone mineralization starts around the time of birth, gradually gains intensity and is maximal between approximately 10 and 18 days. It is speculated that the ionized calcium fraction may be the precursor of mineral formation.

Age Factors↗
PubMed1975

Effect of edgewise treatment and retention on manidbular incisors.

This study consisted of analyzing clinical records of fifty cases treated for correction of Class I malocclusion with varying degrees of bimaxillary protrusion and anterior mandibular crowding. Thrity of these cases required extraction of all four first premolars. Parameters characterizing changes in position of mandibular incisors during treatment with edgewise appliances and during retention and shortly afterward were studied. All the parameters indicated rather similar changes for the nonextraction and the extraction groups. The relapse of anterior mandibular crowding was significantly larger (p less than or equal to 0.05) in the nonextraction group. The IMPA and interincisal angle changed significantly more in the extraction group. Upon testing for validity of the mesiodistal to faciolingual indices, it was determined that they predicted stability of the achieved alignment of mandibular incisors. There were, however, individual cases in both groups which did not follow the central tendency. It was observed that the mesiodistal diameters of mandibular incisirs were somewhat larger in the extraction cases. There was only one pair of parameters that showed a moderately high intercorrelation (r equals 0.68); that was between correction of the anterior crowding and relapse of the intercanine expansion. It was observed that the more correction took place, the more readily expanded canines would relapse. An over-all impression is that the mandibular incisors change little in their position to each other and relative to the other structures of the mouth. The question remains: Is this due to our ability to control them well, or due to an inability to move and maintain them in their new position?

Bicuspid↗