Ahead of its time?
Classic Maya sites in the lowlands of the Yucatan Peninsula are generally known for their monumental art and architecture in central sacrosanct spaces, and their political economies are believed to have been highly centralized. The predominantly Early Classic site of Chunchucmil, however, does not fit this stereotype. Moreover, even though its urban population ranks among the largest and most densely packed in any Maya site, it inhabits one of the most depauperate agricultural landscapes. These idiosyncrasies have stimulated a great deal of archaeological research, all of which lead to the conclusion that Chunchucmil had a surprisingly commercialized economy. In addition to importing basic necessities, some of which were exchanged in a large central marketplace, its basic economy was built on servicing merchants along the most active Mesoamerican maritime trade route and funneling long distance trade items to sites in the interior of the peninsula. This article summarizes the data leading to the conclusion that Chunchucmil’s economic complexity rivaled that of the secondary states of the Postclassic Period and therefore was way ahead of its time. It also questions whether the kind of bottom-up approach applied here might reveal more complex economies at other Classic Maya sites than the more ardent advocates of the prevailing, monolithic ‘political economy’ paradigm have thus far been able to concede. In which case, it was perhaps only slightly ahead of its time.
Ridged Fields and Associated Features in Southern Campeche: New Perspectives on the Lowland Maya
Abstract Prehistoric ridged fields and canals were recognized from the air in 1968 along the Candelaria River of Campeche, Mexico, in the vicinity of sites described by E. Willys Andrews in 1943. These remains were subsequently identified by Scholes and Roys as the settlements of Acalan, a native province along the route of the journey by Cortes to Honduras. Ground exploration in 1969 and 1970 has suggested that the fields were used over a considerable period of time under a system of diversified horticulture. The extensive canal system apparently provided access from the rivers to firm ground and allowed shortcuts and bypasses alongside the rivers themselves. The landscape suggests a considerable prehistoric population, vigorously engaged in major public works projects over a large area. It invites further integrated investigation of its past human ecology, particularly for information on variants of basic Lowland Maya subsistence patterns and the new perspectives this may give on the structure, success and demise of this civilization. An earlier version of this paper was read at the 39th International Congress of Americanists in Lima, 1970.
Efficacy of Biodentine as an Apical Plug in Nonvital Permanent Teeth with Open Apices: An In Vitro Study
The aim of this study was to evaluate the apical microleakage of Biodentine and MTA orthograde apical plugs and to compare the effect of thickness of these biomaterials on their sealing ability. A total of eighty maxillary anterior teeth were used. The apices were removed by cutting with a diamond disc (Jota, Germany) 2 mm from the apical root end in an attempt to standardize the working length of all specimens to 15 ± 1 mm. Both materials were placed in 1–4 mm thickness as apical plugs root canal. Root canal leakage was evaluated by the fluid filtration technique. One-way ANOVA was used in order to determine normality of dispersal distribution of parameters; thereafter, results were analyzed by Kolmogorov-Smirnov test. Overall, between microleakage values of MTA and Biodentine regardless of apical plug thickness, no difference was observed. In terms of plug thickness, a statistically significant difference was observed between the subgroups of MTA and Biodentine (p < 0.05). The apical sealing ability of Biodentine was comparable to MTA at any apical plug thickness.