Comparisons of nipple attachment and incisor growth among four species of voles (Microtus)

1994 ◽  
Vol 27 (5) ◽  
pp. 317-330 ◽  
Author(s):  
Allen L. Salo ◽  
Lawrence E. Shapiro ◽  
Donald A. Dewsbury
Keyword(s):  
Incisor Growth

scholarly journals Mandible Biomechanics and Continuously Erupting Teeth: A New Defect Model for Studying Load-Bearing Biomaterials

Biomedicines ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 730
Author(s):  
Jonathan Z. Baskin ◽  
Brandon M. White ◽  
Amit Vasanji ◽  
Thomas E. Love ◽  
Steven J. Eppell
Keyword(s):  
Critical Size ◽  
Supporting Evidence ◽  
Defect Model ◽  
Post Intervention ◽  
Critical Size Defect ◽  
Load Bearing ◽  
Tooth Structure ◽  
Incisor Growth ◽  
Apparent Relationship ◽  
Mandible Defect

Animals with elodont dentition and unfused mandible symphyses are hypothesized to have symmetric incisor morphology. Since these animals maintain their teeth by gnawing, they may provide physiologic feedback on mechanical function when unilateral mandible defects are created that manifest as ipsilateral changes in tooth structure. This defect model would potentially generate important information on the functional/mechanical properties of implants. Rats’ and rabbits’ mandibles and teeth are analyzed with µCT at baseline and post-intervention (n = 8 for each). Baseline incisors were compared. In a unilateral mandible pilot study, defects—ranging from critical size defect to complete ramus osteotomies—were created to assess effect on dentition (rats, n = 7; rabbits, n = 6). Within 90% confidence intervals, animals showed no baseline left/right differences in their incisors. There are apparent dental changes associated with unilateral defect type and location. Thus, at baseline, animals exhibit statistically significant incisor symmetry and there is an apparent relationship between mandible defect and incisor growth. The baseline symmetry proven here sets the stage to study the degree to which hemi-mandible destabilizing procedures result in measurable & reproducible disruption of dental asymmetry. In a validated model, an implant designed to function under load that prevents incisor asymmetry would provide supporting evidence that the implant has clinically useful load-bearing function.

Incisor growth in twins during the seventh and eighth months of foetal life

1963 ◽  
Vol 12 (3) ◽  
pp. 238-246 ◽  
Author(s):  
Maurice V. Stack
Keyword(s):  
Linear Regression ◽  
Regression Equation ◽  
Linear Regression Equation ◽  
Central Incisor ◽  
Dental Tissue ◽  
Lower Upper ◽  
Incisor Growth ◽  
Foetal Life ◽  
Similar Development

SUMMARYWeights of mineralized dental tissue have been determined in incisors dissected from ten pairs of twins failing to survive beyond 7-8 months' gestation. Logarithms of weights were compared as ratios (lower/upper) with data from foetuses of similar development. Intra-twin differences were thus shown to be significantly less than inter-twin differences when comparing central incisors. Lateral incisors were too variable to allow this demonstration. The linear regression equation combining logarithms of lower and upper central incisor weights was suitable for estimating foetal age to within one week of the recorded age.

scholarly journals Incisor growth in voles

1990 ◽  
Vol 35 ◽  
pp. 331-344 ◽  
Author(s):  
Galina A. Klevezal ◽  
Michalina Pucek ◽  
Ludmiła I. Sukhovskaja
Keyword(s):  
Incisor Growth

Relationship Between the Number of Rat Littermates per Dam and Mandibular Incisor Growth

1974 ◽  
Vol 53 (3) ◽  
pp. 634-636 ◽  
Author(s):  
Miguel C. Madeira ◽  
Sebastião Hetem ◽  
Mauro A. Rulli
Keyword(s):  
Mandibular Incisor ◽  
Incisor Growth

Rate of Incisor Growth in the Mountain Pocket Gopher

1958 ◽  
Vol 39 (3) ◽  
pp. 380 ◽  
Author(s):  
Richard S. Miller
Keyword(s):  
Pocket Gopher ◽  
Incisor Growth

Impact of diet on incisor growth and attrition and the development of dental disease in pet rabbits

2015 ◽  
Vol 56 (6) ◽  
pp. 377-382 ◽  
Author(s):  
A. L. Meredith ◽  
J. L. Prebble ◽  
D. J. Shaw
Keyword(s):  
Dental Disease ◽  
Incisor Growth

The response of the rabbit mandibular incisor to experimental shortening and to the prevention of its eruption

1956 ◽  
Vol 146 (922) ◽  
pp. 129-154 ◽  
Keyword(s):  
Radius Of Curvature ◽  
Minimum Level ◽  
Mandibular Incisor ◽  
Eruption Rate ◽  
Significant Variance ◽  
Incisor Growth ◽  
Consistent Relationship ◽  
Domestic Rabbits ◽  
The Right ◽  
Lower Incisors

Measurements have been made of the eruption rates of the mandibular incisors of domestic rabbits, to examine the effects of shortening one or both incisors for a period of three weeks. Concomitant measurements were made of the rate of wear and the length of the incisors, and of a number of other values defining the occlusion of the lower incisors with the uppers. In occlusion the incisors erupt at rates around 280 μ /day. On being shortened their rates rise within a day to about 600 μ /day and are maintained at about 700 μ /day, while the incisor is kept out of occlusion. During such changes the growing base does not alter its position. Thus under these conditions eruption rate is an index of the rate of growth of toothforming tissues which, in turn, is controlled by the forces exerted, in biting, on the incisor tip. When eruption is prevented by the insertion of a pin through tooth and bone, the basal tissue does not stop growing; it becomes folded and the base of the socket may be resorbed. This indicates that the control of basal growth by occlusal pressure does not extend below a minimum level of eruption, which may be estimated as about 100 μ /day. The eruption rates of the right and left incisors of an animal tend to vary together when both are in, or out of, occlusion. Different factors hold the rates together under these two conditions, since there is no significant correlation between the rates of a shortened incisor and its unshortened fellow. There is no consistent relationship between the eruption rates of an incisor in occlusion and the potential rates it exhibits when erupting freely, although in either condition there is significant variance between the eruption rates of individuals During a period of experimental shortening, the eruption rates show peak values about 7 days after the incisor is taken out of occlusion. This phenomenon is not related to a change in level of a circulating substance promoting incisor growth; an incisor shortened during the period of peak eruption of its fellow behaves independently in that it shows peak values also about 7 days after being freed from occlusion. The incisor shortened second erupts faster than its fellow and this difference is maintained. During a period of experimental shortening, most operated incisors become proclinated and increase their radius of curvature, and such teeth usually show marked depression of their eruption rates in the following period, possibly through an increased proportion of the force of the bite being borne by the proclinated incisor.

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