scholarly journals Complete Maxillary Denture Mobility Related to Posterior Tooth Position.

1998 ◽  
Vol 42 (3) ◽  
pp. 415-423
Author(s):  
Kensuke Kakihara ◽  
Kenji Notani ◽  
Takao Kawasaki ◽  
Kentarou Mizuno ◽  
Naoki Ohta ◽  
...  
Keyword(s):  
Tooth Position ◽  
Posterior Tooth

scholarly journals Dental microwear texture gradients in guinea pigs reveal that material properties of the diet affect chewing behaviour

2021 ◽  
Author(s):  
Daniela E. Winkler ◽  
Marcus Clauss ◽  
Maximilian Rölle ◽  
Ellen Schulz-Kornas ◽  
Daryl Codron ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Guinea Pigs ◽  
Dental Microwear ◽  
Natural Habitats ◽  
Tooth Position ◽  
Posterior Tooth ◽  
Plant Feeding ◽  
Feeding Experiments ◽  
Anterior Teeth ◽  
Chewing Behaviour

Dental microwear texture analysis (DMTA) is widely used for diet inferences in extant and extinct vertebrates. Often, a reference tooth position is analysed in extant specimens, while isolated teeth are lumped together in fossil datasets. It is therefore important to test whether DMT is tooth position specific, and if so, what the causes for wear differences are. Here we present results from controlled feeding experiments with 72 guinea pigs, which either received fresh or dried natural plant diets of different phytolith content (lucerne, grass, bamboo), or pelleted diets with and without mineral abrasives (frequently encountered by herbivorous mammals in natural habitats). We test for gradients in dental microwear texture along the upper cheek tooth row. Regardless of abrasive content, pelleted diets display an increase in surface roughness along the tooth row, indicating that posterior tooth positions experience more wear compared to anterior teeth. Guinea pigs feedings on plants of low phytolith content and low abrasiveness (fresh and dry lucerne, fresh grass) show almost no DMT differences between tooth positions, while individuals feeding on more abrasive plants (dry grass, fresh and dry bamboo) show a gradient of decreasing surface roughness along the tooth row. We suggest that plant feeding involves continuous intake and comminution by grinding, resulting in posterior tooth positions mainly processing food already partly comminuted and moistened. Pelleted diets require crushing, which exerts higher loads, especially on posterior tooth positions, where bite forces are highest. These differences in chewing behaviour result in opposing wear gradients for plant versus pelleted diets.

scholarly journals A retrospective cohort study of how alveolar ridge preservation affects the need of alveolar ridge augmentation at posterior tooth implant sites

2021 ◽  
Author(s):  
Kai-Fang Hu ◽  
Ying-Chu Lin ◽  
Yu-Ting Huang ◽  
Yu-Hsiang Chou
Keyword(s):  
Treatment Modality ◽  
Alveolar Bone ◽  
Dental Treatment ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Ridge Augmentation ◽  
Posterior Tooth ◽  
Alveolar Ridge Preservation ◽  
Study Results ◽  
Treatment Plans

Abstract Objectives The aim of this study was to assess whether alveolar ridge preservation (ARP) can reduce the need of ridge augmentation at posterior tooth sites. Material and methods This study enrolled patients who received dental implants at posterior tooth sites during 2013–2019. Demographic data and dental treatment histories were collected. Based on healing patterns after tooth extraction, patients were divided into ARP and spontaneous healing (SH) groups. Three surgical treatment plans were devised according to the alveolar bone volume on cone-beam computed tomography (CBCT). The three treatment plans were to perform implant alone, simultaneous guided bone regeneration (GBR) and implantation, and staged GBR before implantation. Statistical analyses were performed to determine relationships. Results There were 92 implant records in the ARP group and 249 implant records in the SH group. A significant intergroup difference was observed regarding the frequency distribution of the treatment modality of staged GBR before implant (χ2 = 15.07, p = 0.0005). Based on the implant alone treatment modality and simple logistic regression, the SH pattern was related to staged GBR before implant (SH vs. ARP: crude odds ratio (OR) = 4.65, 95% confidence interval (CI) = 2.15–11.61, p = 0.0003). After adjusting confounding factors, the risk was still significant (adjusted OR = 5.02, 95% CI = 2.26–12.85, p = 0.0002). Conclusions The study results suggested that ARP is more likely to lead to the treatment modality of implant alone and reduce the need for staged GBR before implantation. Clinical relevance This study describes ARP capable of minimizing the need for staged GBR before implantation and shortening the treatment duration.

Abnormal Tooth Position

2019 ◽  
pp. 239-247
Author(s):  
Masayoshi Uezono ◽  
Keiji Moriyama
Keyword(s):  
Tooth Position

Deviation from the Broadrick occlusal curve following posterior tooth loss

2006 ◽  
Vol 33 (6) ◽  
pp. 423-429 ◽  
Author(s):  
H. L. CRADDOCK ◽  
C. C. YOUNGSON ◽  
M. MANOGUE
Keyword(s):  
Tooth Loss ◽  
Posterior Tooth

scholarly journals Is there an association between skeletal asymmetry and tooth absence?

2016 ◽  
Vol 21 (4) ◽  
pp. 73-79 ◽  
Author(s):  
Guilherme Thiesen ◽  
Bruno Frazão Gribel ◽  
Keila Cristina Rausch Pereira ◽  
Maria Perpetua Mota Freitas
Keyword(s):  
Cross Sectional Study ◽  
Midsagittal Plane ◽  
Chi Square ◽  
Cross Sectional ◽  
Posterior Teeth ◽  
Significance Level ◽  
Posterior Tooth ◽  
Mandibular Asymmetry ◽  
Significant Difference ◽  
Skeletal Asymmetry

ABSTRACT Introduction: Facial skeletal asymmetry is commonly found in humans and its main characteristic is menton deviation. The literature suggests that occlusal and masticatory problems arising from tooth absence could be related to the development of such asymmetries. Objective: The aim of this cross-sectional study was to estimate the prevalence of mandibular skeletal asymmetries and to investigate its association with posterior tooth absences. Methods: Tomographic images of 952 individuals aged from 18 to 75 years old were used. Asymmetry was the analyzed outcome, and it was categorized into three groups according to gnathion displacement in relation to the midsagittal plane (relative symmetry, moderate asymmetry, and severe asymmetry). Patients were sorted by the presence of all posterior teeth, unilateral posterior tooth absence, or bilateral posterior tooth absence. Chi-square test with a significance level of 5% was used to verify the association between posterior tooth absence and asymmetry. Results: Results show relative symmetry present in 55.3% of the sample, as well as the prevalence of 27.3% for moderate mandibular asymmetry and 17.4% for severe asymmetry. Moderate and severe mandibular asymmetries occurred in a higher proportion in patients with unilateral posterior tooth absence. However, there was no statistically significant difference between the analyzed groups (p = 0.691). Conclusions: In this study, mandibular asymmetries did not present any association with the absence of teeth on the posterior area of the arch.

scholarly journals Posterior tooth size discrepancy

2008 ◽  
Vol 11 (1) ◽  
pp. 8-22 ◽  
Author(s):  
Arlette Oueiss ◽  
Christine Marchal-Sixou ◽  
Ahmad Dallow ◽  
Pascal Baron ◽  
Jacques Faure
Keyword(s):  
Tooth Size ◽  
Posterior Tooth ◽  
Size Discrepancy ◽  
Tooth Size Discrepancy

scholarly journals Mandibular anterior crowding: normal or pathological?

2018 ◽  
Vol 23 (2) ◽  
pp. 30-36
Author(s):  
Alberto Consolaro ◽  
Mauricio de Almeida Cardoso
Keyword(s):  
Orthodontic Treatment ◽  
Body Movements ◽  
Anterior Crowding ◽  
Tooth Position ◽  
Epithelial Rests Of Malassez

ABSTRACT The teeth become very close to each other when they are crowded, but their structures remain individualized and, in this situation, the role of the epithelial rests of Malassez is fundamental to release the EGF. The concept of tensegrity is fundamental to understand the responses of tissues submitted to forces in body movements, including teeth and their stability in this process. The factors of tooth position stability in the arch - or dental tensegrity - should be considered when one plans and perform an orthodontic treatment. The direct causes of the mandibular anterior crowding are decisive to decide about the correct retainer indication: Should they be applied and indicated throughout life? Should they really be permanently used for lifetime? These aspects of the mandibular anterior crowding and their implication at the orthodontic practice will be discussed here to induct reflections and insights for new researches, as well as advances in knowledge and technology on this subject.

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