scholarly journals A Family of Generalized Linear Models for Repeated Measures with Normal and Conjugate Random Effects

2010 ◽  
Vol 25 (3) ◽  
pp. 325-347 ◽  
Author(s):  
Geert Molenberghs ◽  
Geert Verbeke ◽  
Clarice G. B. Demétrio ◽  
Afrânio M. C. Vieira
Keyword(s):  
Random Effects ◽  
Generalized Linear Models ◽  
Repeated Measures ◽  
Linear Models

Effect of Different Dentifrices, Bleaching with 35% Hydrogen Peroxide, and Red Wine on Surface Color and Roughness of Bovine Enamel

2020 ◽  
Vol 02 ◽  
Author(s):  
RM Garcia ◽  
WF Vieira-Junior ◽  
JD Theobaldo ◽  
NIP Pini ◽  
GM Ambrosano ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Generalized Linear Models ◽  
Repeated Measures ◽  
Red Wine ◽  
Linear Models ◽  
Artificial Saliva ◽  
Surface Color ◽  
Dental Bleaching ◽  
Surface Alteration ◽  
Bovine Enamel

Objective: To evaluate color and roughness of bovine enamel exposed to dentifrices, dental bleaching with 35% hydrogen peroxide (HP), and erosion/staining by red wine. Methods: Bovine enamel blocks were exposed to: artificial saliva (control), Oral-B Pro-Health (stannous fluoride with sodium fluoride, SF), Sensodyne Repair & Protect (bioactive glass, BG), Colgate Pro-Relief (arginine and calcium carbonate, AR), or Chitodent (chitosan, CHI). After toothpaste exposure, half (n=12) of the samples were bleached (35% HP), and the other half were not (n=12). The color (CIE L*a* b*, ΔE), surface roughness (Ra), and scanning electron microscopy were evaluated. Color and roughness were assessed at baseline, post-dentifrice and/or -dental bleaching, and after red wine. The data were subjected to analysis of variance (ANOVA) (ΔE) for repeated measures (Ra), followed by Tukey ́s test. The L*, a*, and b* values were analyzed by generalized linear models (a=0.05). Results: The HP promoted an increase in Ra values; however, the SF, BG, and AR did not enable this alteration. After red wine, all groups apart from SF (unbleached) showed increases in Ra values; SF and AR promoted decreases in L* values; AR demonstrated higher ΔE values, differing from the control; and CHI decreased the L* variation in the unbleached group. Conclusion: Dentifrices did not interfere with bleaching efficacy of 35% HP. However, dentifrices acted as a preventive agent against surface alteration from dental bleaching (BG, SF, and AR) or red wine (SF). Dentifrices can decrease (CHI) or increase (AR and SF) staining by red wine.

Analyzing Repeated Measures on Generalized Linear Models via the Bootstrap

Biometrics ◽  
1989 ◽  
Vol 45 (2) ◽  
pp. 381 ◽  
Author(s):  
Lawrence H. Moulton ◽  
Scott L. Zeger
Keyword(s):  
Generalized Linear Models ◽  
Repeated Measures ◽  
Linear Models

Generalized Linear Models with Random Effects

2006 ◽  
Author(s):  
Youngjo Lee ◽  
John A. Nelder ◽  
Yudi Pawitan
Keyword(s):  
Random Effects ◽  
Generalized Linear Models ◽  
Linear Models
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