Thesis (M.S. in oral sciences)--University of Illinois at Chicago, 1997. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S. in oral sciences)--University of Illinois at Chicago, 1997. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

O estudo objetivou avaliar as alterações propiciadas pela expansão rápida da maxila (ERM) na trajetória de erupção dos caninos superiores na fase da dentadura mista. Foram selecionados caninos no estágio 8 de Nolla e que estivessem localizados nos setores II, III ou IV e distribuídos em 3 Grupos: Grupo 1 (G1) - Caninos Potencialmente Impactados com Expansão (CPIE) (n=49), Grupo 2 (G2) – Caninos em Normalidade Sem Expansão (CNSE) (n=54) e Grupo 3 (G3) – Caninos em Normalidade Com Expansão (CNCE) (n=27). Foram avaliadas as posições vertical, horizontal e angular dos caninos e dentes adjacentes em 2 tempos (T1 e T2) com intervalo de 1 ano, em radiografias panorâmicas. Os dados foram analisados estatisticamente (p<0,05). Os seguintes resultados foram obtidos: Após a ERM (T2), os CPIs (Grupo 1) melhoraram seu posicionamento tornando-se semelhante aos caninos em normalidade (Grupo 2) em todas as variáveis. As maiores alterações horizontal e angular dos caninos após a ERM contribuíram para as mudanças dos CPIs para os setores menos severos e para manutenção de um alto percentual de normalidade no Grupo 3 (92,59%). O percentual de caninos no setor I aumentou de 0% para 44,9%. O percentual de caninos nos setores II, III e IV diminuiu de 65,31% para 51,02%, de 28,57% para 4,08% e de 6,12% para 0%, respectivamente. Em geral, a melhora vertical dos caninos foi significantemente maior nos Grupos 1 e 3, resultando num maior percentual de caninos erupcionados ou próximos à erupção. Os Grupos em normalidade (2 e 3) permaneceram semelhantes na maioria das variáveis, exceto para o posicionamento horizontal, onde o canino do Grupo 3 mostrou posicionamento ainda mais favorável do que o do Grupo 1. Como conclusão tem-se que a ERM apresentou impacto favorável na erupção dos CPIs, proporcionou a reversão do desvio do eixo de erupção dos CPIs, restabelecendo o desenvolvimento normal. / The purpose of this study was to evaluate the changes caused by rapid maxillary expansion (RME) in the maxillary canine eruption path in the mixed dentition phase. Canines in stage 8 of Nolla and that were located in sectors II, III or IV were selected and distributed in 3 Groups: Group 1 (G1) - potentially impacted canines with expansion (PICE) (n = 49), Group 2 (G2) - canines in normality with no expansion (CNNE) (n = 54) and Group 3 (G3) - canines in normality with expansion (CNWE) (n = 27). The vertical, horizontal and angular positioning of canines and adjacent teeth were evaluated in T1 and T2 with a year interval using panoramic radiographs. The data were analyzed statistically (p <0.05). The following results were obtained: After RME (T2), PICs (Group 1) improved their positioning, becoming similar to canines in normality (Group 2) in all variables. The greater horizontal and angular changes of the canines after the RME contributed to the changes of the CPIs for the less severe sectors and to maintain a high percentage of normality in Group 3 (92.59%). In general, canine vertical improvement was significantly higher in Groups 1 and 3, resulting in a higher percentage of canines erupted or near the eruption. The groups in normality (2 and 3) remained similar in most variables, except for the horizontal positioning, where the canine Group 3 showed even more favorable positioning than Group 2. Conclusion: RME had a favorable impact on the eruption of PICs, provided a reversal of the deviation of the PIC eruption path, restoring normal development.

O estudo objetivou avaliar as alterações propiciadas pela expansão rápida da maxila (ERM) na trajetória de erupção dos caninos superiores na fase da dentadura mista. Foram selecionados caninos no estágio 8 de Nolla e que estivessem localizados nos setores II, III ou IV e distribuídos em 3 Grupos: Grupo 1 (G1) - Caninos Potencialmente Impactados com Expansão (CPIE) (n=49), Grupo 2 (G2) – Caninos em Normalidade Sem Expansão (CNSE) (n=54) e Grupo 3 (G3) – Caninos em Normalidade Com Expansão (CNCE) (n=27). Foram avaliadas as posições vertical, horizontal e angular dos caninos e dentes adjacentes em 2 tempos (T1 e T2) com intervalo de 1 ano, em radiografias panorâmicas. Os dados foram analisados estatisticamente (p<0,05). Os seguintes resultados foram obtidos: Após a ERM (T2), os CPIs (Grupo 1) melhoraram seu posicionamento tornando-se semelhante aos caninos em normalidade (Grupo 2) em todas as variáveis. As maiores alterações horizontal e angular dos caninos após a ERM contribuíram para as mudanças dos CPIs para os setores menos severos e para manutenção de um alto percentual de normalidade no Grupo 3 (92,59%). O percentual de caninos no setor I aumentou de 0% para 44,9%. O percentual de caninos nos setores II, III e IV diminuiu de 65,31% para 51,02%, de 28,57% para 4,08% e de 6,12% para 0%, respectivamente. Em geral, a melhora vertical dos caninos foi significantemente maior nos Grupos 1 e 3, resultando num maior percentual de caninos erupcionados ou próximos à erupção. Os Grupos em normalidade (2 e 3) permaneceram semelhantes na maioria das variáveis, exceto para o posicionamento horizontal, onde o canino do Grupo 3 mostrou posicionamento ainda mais favorável do que o do Grupo 1. Como conclusão tem-se que a ERM apresentou impacto favorável na erupção dos CPIs, proporcionou a reversão do desvio do eixo de erupção dos CPIs, restabelecendo o desenvolvimento normal. / The purpose of this study was to evaluate the changes caused by rapid maxillary expansion (RME) in the maxillary canine eruption path in the mixed dentition phase. Canines in stage 8 of Nolla and that were located in sectors II, III or IV were selected and distributed in 3 Groups: Group 1 (G1) - potentially impacted canines with expansion (PICE) (n = 49), Group 2 (G2) - canines in normality with no expansion (CNNE) (n = 54) and Group 3 (G3) - canines in normality with expansion (CNWE) (n = 27). The vertical, horizontal and angular positioning of canines and adjacent teeth were evaluated in T1 and T2 with a year interval using panoramic radiographs. The data were analyzed statistically (p <0.05). The following results were obtained: After RME (T2), PICs (Group 1) improved their positioning, becoming similar to canines in normality (Group 2) in all variables. The greater horizontal and angular changes of the canines after the RME contributed to the changes of the CPIs for the less severe sectors and to maintain a high percentage of normality in Group 3 (92.59%). In general, canine vertical improvement was significantly higher in Groups 1 and 3, resulting in a higher percentage of canines erupted or near the eruption. The groups in normality (2 and 3) remained similar in most variables, except for the horizontal positioning, where the canine Group 3 showed even more favorable positioning than Group 2. Conclusion: RME had a favorable impact on the eruption of PICs, provided a reversal of the deviation of the PIC eruption path, restoring normal development.

O estudo objetivou avaliar as alterações propiciadas pela expansão rápida da maxila (ERM) na trajetória de erupção dos caninos superiores na fase da dentadura mista. Foram selecionados caninos no estágio 8 de Nolla e que estivessem localizados nos setores II, III ou IV e distribuídos em 3 Grupos: Grupo 1 (G1) - Caninos Potencialmente Impactados com Expansão (CPIE) (n=49), Grupo 2 (G2) – Caninos em Normalidade Sem Expansão (CNSE) (n=54) e Grupo 3 (G3) – Caninos em Normalidade Com Expansão (CNCE) (n=27). Foram avaliadas as posições vertical, horizontal e angular dos caninos e dentes adjacentes em 2 tempos (T1 e T2) com intervalo de 1 ano, em radiografias panorâmicas. Os dados foram analisados estatisticamente (p<0,05). Os seguintes resultados foram obtidos: Após a ERM (T2), os CPIs (Grupo 1) melhoraram seu posicionamento tornando-se semelhante aos caninos em normalidade (Grupo 2) em todas as variáveis. As maiores alterações horizontal e angular dos caninos após a ERM contribuíram para as mudanças dos CPIs para os setores menos severos e para manutenção de um alto percentual de normalidade no Grupo 3 (92,59%). O percentual de caninos no setor I aumentou de 0% para 44,9%. O percentual de caninos nos setores II, III e IV diminuiu de 65,31% para 51,02%, de 28,57% para 4,08% e de 6,12% para 0%, respectivamente. Em geral, a melhora vertical dos caninos foi significantemente maior nos Grupos 1 e 3, resultando num maior percentual de caninos erupcionados ou próximos à erupção. Os Grupos em normalidade (2 e 3) permaneceram semelhantes na maioria das variáveis, exceto para o posicionamento horizontal, onde o canino do Grupo 3 mostrou posicionamento ainda mais favorável do que o do Grupo 1. Como conclusão tem-se que a ERM apresentou impacto favorável na erupção dos CPIs, proporcionou a reversão do desvio do eixo de erupção dos CPIs, restabelecendo o desenvolvimento normal. / The purpose of this study was to evaluate the changes caused by rapid maxillary expansion (RME) in the maxillary canine eruption path in the mixed dentition phase. Canines in stage 8 of Nolla and that were located in sectors II, III or IV were selected and distributed in 3 Groups: Group 1 (G1) - potentially impacted canines with expansion (PICE) (n = 49), Group 2 (G2) - canines in normality with no expansion (CNNE) (n = 54) and Group 3 (G3) - canines in normality with expansion (CNWE) (n = 27). The vertical, horizontal and angular positioning of canines and adjacent teeth were evaluated in T1 and T2 with a year interval using panoramic radiographs. The data were analyzed statistically (p <0.05). The following results were obtained: After RME (T2), PICs (Group 1) improved their positioning, becoming similar to canines in normality (Group 2) in all variables. The greater horizontal and angular changes of the canines after the RME contributed to the changes of the CPIs for the less severe sectors and to maintain a high percentage of normality in Group 3 (92.59%). In general, canine vertical improvement was significantly higher in Groups 1 and 3, resulting in a higher percentage of canines erupted or near the eruption. The groups in normality (2 and 3) remained similar in most variables, except for the horizontal positioning, where the canine Group 3 showed even more favorable positioning than Group 2. Conclusion: RME had a favorable impact on the eruption of PICs, provided a reversal of the deviation of the PIC eruption path, restoring normal development.

Thesis (doctoral)--Universität Tübingen, 1935. / At head of title: Aus dem Zahnärtzlichen Institut der Universität Tübingen. "Lebenslauf": p. 48.

Thesis (doctoral)--Universität Tübingen, 1935. / At head of title: Aus dem Zahnärtzlichen Institut der Universität Tübingen. "Lebenslauf": p. 48.

Some areas near Flin Flon, MB and Creighton, SK are devoid of vegetation due to a variety of mining, smelting, forestry activities and forest fires that have occurred since the 1930’s. This study investigated the use of soil amendments to enhance revegetation in these areas. The study was comprised of two main components, an in situ study and a growth chamber trial. The in situ component was conducted to determine the efficacy of soil amendments that could be utilized in a revegetation program. The growth chamber trial examined if the amount of moisture present in the soil would have an influence on the success of vegetation survival and growth. The in situ study was conducted near Flin Flon, MB and Creighton, SK over two growing seasons and consisted of replicated treatments imposed at 12 sites. Tree seedlings [trembling aspen (Populus tremuloides Michx.) and jack pine (Pinus banksiana Lamb.)] and understory species [tufted hairgrass (Deschampsia cespitosa L.) and American vetch (Vicia americana Muhl.)] were planted at each site. Each site also received soil amendments; bone meal and meat biochar (BMB), compost, commercial mycorrhizal inoculant (EMF) and, willow biochar (WB) in combination with dolomitic limestone and fertilizer. Each site also had a control that received an application of only dolomitic limestone and fertilizer. The growth chamber trial utilized the same plant species and soil amendments as the field trial with the exclusion of willow biochar. In general, soil amendments did not influence the survival or growth of the tree seedlings in situ or in the growth chamber trial. However, the compost amendment increased survival and growth of the tufted hairgrass significantly in the growth chamber trial and to a lesser extent in the field trial. Compost also positively influenced the pH and base saturation of the soil compared to the other amendments. The mycorrhizal inoculant increased the rate of mortality of tree species in the growth chamber trial. Moisture did not influence the survival and growth of the seedlings or understory species or the efficacy of the amendment treatments in this study.

Magister Scientiae Dentium - MSc(Dent) / Aim: A clinical trial to determine the post-operative outcomes of a PRF-treated socket versus a conventionally treated socket following surgical removal of third molar teeth. Introduction: Third molar surgery is a procedure many have to endure and which often results in prolonged healing time with consequential absence from work and school. This has motivated clinicians to seek methods to enhance the healing process and in effect, reduce the healing time. Research on the use of PRF in enhancing wound healing in maxillofacial and oral surgery have shown varying results. Therefore, this study was conceived to ascertain the effect PRF has on the post-operative sequelae of third molar teeth. Materials and Methods: This was a split mouth, prospective, single blinded, randomized control trial. The study sample was made up of 26 patients (N=26) who met the inclusion criteria. Four of the patients experienced neurosensory fallout of an associated nerve and were subsequently excluded from the sample. This resulted in the total sample size of twenty-two patients (n=22). Symmetrically impacted maxillary and mandibular third molars were removed under general anaesthesia. Patients were treated in a within subject design: when one side of a patient was treated with PRF, the other side was conventionally treated and acted as a control. The allocation of the side treated with PRF was 'random'. Patients were followed-up on Day 2 and Day 7, respectively. Pain scores were recorded on a visual analogue scale (VAS) using 0 to 10 pain score. Swelling, wound dehiscence, development of alveolar osteitis, wound infection and post-operative bleeding were compared between the intervention and control side. Results: Twenty-two patients (females = 13 and males = nine) b

Comparou-se a eficiência de quatro diferentes protocolos de tratamento de caninos superiores impactados empregados na Faculdade de Odontologia de Bauru Universidade de São Paulo. Para tanto, foram eleitos 67 casos de pacientes tratados na Disciplina de Ortodontia selecionados de acordo com a abordagem terapêutica empregada, independente da classificação de má oclusão, sendo alocados em quatro grupos: Grupo 1, constituído de 14 pacientes tratados com aparelho fixo apenas, sem exodontia de nenhum dente superior; Grupo 2, constituído de 26 pacientes tratados aparelho fixo associados a exodontia de dois premolares superiores; Grupo 3, constituído de 12 pacientes tratados com aparelho fixo associado a expansão da maxila; Grupo 4, constituído de 15 pacientes tratados com aparelho fixo associados a expansão da maxila e exodontia de dois premolares superiores. Para a verificação do melhor resultado oclusal utilizou-se o índice PAR (Peer Assessment Rating) nos modelos de gesso iniciais e finais desses pacientes. O tempo dedicado ao tratamento foi calculado e levado em consideração na obtenção do resultado da eficiência do tratamento. Os resultados demonstraram que todos os protocolos de tratamentos se mostraram eficientes, com tempo de tratamento semelhantes, e que não houve diferença quanto aos protocolos de tratamento entre grupos estudados. / The aim was to compare the eficiency of four treatment protocols for maxillary impacted canines employed at Bauru Dental School University of São Paulo. The sample comprised 67 documentations provided from patients treated within Orthodontics clinics assigned in four different groups: Group 1, 14 patients treated with fixed appliance only; Group 2, 26 patients treated with fixed appliance and premolar extraction; Group 3, 12 patients treated with fixed appliance and maxilllary expansion; Group 4, 15 patients treated with fixed appliance associated with maxillary expansion and premolar extraction. All the model casts were evaluated by the means of PAR índex (Peer assessment rating). Treatment time was also evaluated. The results showed that all treatment protocols were efficient with simmilar treatment time and no difference efficiency among the groups.